Prosiding Seminar Nasional Inovasi Teknologi Terapan

Cover, Dewan Redaksi dan Reviewer, Keynote Speaker, Kata Pengantar, Daftar Isi, dan Susunan Acara

Cover Cover — Fri, 21 Aug 2026 00:00:00 +0700

Cover, Dewan Redaksi dan Reviewer, Keynote Speaker, Kata Pengantar, Daftar Isi, dan Susunan Acara V3

EVALUASI KINERJA SPINDLE MESIN GERINDA DATAR TIPE REFORM PSGS-4070 AH MELALUI ANALISIS GETARAN DI BENGKEL POLMAN BABEL

Syahid Al Akhras, Indra Feriadi, Angga Sateria — Fri, 21 Aug 2026 00:00:00 +0700

Surface grinding constitutes a vital machining process for producing components with high geometric surface quality, with spindle condition serving as the principal factor governing the final machining outcome. This study sets out to evaluate the performance of the spindle on a Reform PSGS-4070 AH surface grinding machine through vibration analysis, while also examining its relationship with surface roughness. An experimental approach was adopted by varying the depth of cut across five levels, with vibration recorded in the horizontal and vertical directions using a Vibroport 80, and surface roughness assessed using a Mitutoyo SJ-210 Surface Roughness Tester. The findings reveal that horizontal vibration rose sharply as the depth of cut increased, moving from Zone A (good) to Zone B (requiring attention) under ISO 10816-3, whereas vertical vibration stayed comparatively steady within Zone A throughout the trials. The resulting spectral pattern points to unbalance in the rotating element along with an early sign of disturbance in the bearing. Horizontal vibration showed a closer relationship with surface roughness than vertical vibration, whose relationship was weaker and less consistent. The safest machining condition was attained at a low depth of cut (≤0.050 mm), yielding the lowest vibration level together with consistently good surface quality.

PERANCANGAN MESIN PENCACAH SAMPAH PLASTIK JENIS BOTOL MINUMAN KEMASAN

Fri, 21 Aug 2026 00:00:00 +0700

Plastic waste, especially beverage bottles, is one type of waste whose quantity continues to increase and is difficult to decompose naturally, thus requiring more effective management efforts. One of the efforts that can be made is thru the design of a plastic shredder machine that can support the recycling process. This research aims to design a plastic bottle shredder using the VDI 2222 method to obtain a design concept that meets user needs. The VDI 2222 method is applied thru the stages of needs identification, demand list preparation, concept alternative development, concept alternative evaluation, and detailed design. The evaluation results show that Concept Variant Alternative (CVA) 1 received the highest score of 88, compared to CVA 2 with a score of 79 and CVA 3 with a score of 76, thus it was chosen as the best concept to be developed in the detailed design stage. The selected concept is deemed capable of meeting the aspects of functional achievement, ease of manufacturing, ease of assembly, ease of maintenance, safety, as well as production and manufacturing costs. Thus, the VDI 2222 method can be used as a systematic approach in determining the design concept of a plastic waste shredder.

ALAT BANTU PENGINGAT MINUM OBAT BERBASIS ARDUINO UNTUK LANSIA DENGAN OUTPUT SUARA

Wika Noventa, Yunis Sadi Savella, Peprizal Peprizal, Helda Susianti — Fri, 21 Aug 2026 00:00:00 +0700

Elderly compliance in taking medication on time is a crucial factor in the success of long-term therapy, but cognitive decline often causes them to forget medication schedules, increasing the risk of complications. This study aims to design an Arduino-based medication reminder tool with voice output without an internet connection or smartphone. The method used is quantitative with a prototyping approach, including needs analysis, design, assembly, and system testing. The tool integrates Arduino Uno, RTC DS3231, 16x2 I2C LCD, 4x4 keypad, DFPlayer Mini, and speaker. Functional testing shows the tool is able to sound an alarm and display medication information on time with three repetitions of notifications. A questionnaire to three elderly respondents produced an average score of 4.30 or 85.9% in the Very Good category. This tool is proven to help elderly people remember medication schedules and types independently without relying on others or the internet.

RANCANGAN MESIN PENYANGRAI BIJI KOPI DAN KAKAO

Fri, 21 Aug 2026 00:00:00 +0700

The roasting process of coffee and cocoa beans is a crucial stage in determining their flavor, aroma, and color. Therefore, a roasting machine capable of producing a uniform and efficient roasting process is required. This study aims to design a 5 kg capacity coffee and cocoa bean roasting machine using the Mechanical Product Cycle (MPC) method. The design stages include problem identification, requirement analysis, machine design, detailed design, fabrication, assembly, and machine performance testing. The machine is designed with an LPG gas-fired heating system, while the roasting drum is driven by an electric motor. The performance test results showed that the machine was able to roast coffee and cocoa beans evenly, with stable operation and in accordance with the planned capacity. Based on these results, the roasting machine designed using the Mechanical Product Cycle (MPC) method performed well and achieved the design objectives by providing an effective, efficient, and easy-to-operate roasting system.

PENGEMBANGAN STANDAR INSPEKSI MESIN BUBUT BERDASARKAN ANALISIS KOMPONEN KRITIS DAN MEAN TIME BETWEEN FAILURE (MTBF)

Ansyarullah Ansyarullah, Indra Feriadi, Rodika Rodika — Fri, 21 Aug 2026 00:00:00 +0700

This study develops a lathe machine inspection standard based on critical component analysis and Mean Time Between Failure (MTBF) to support preventive maintenance. A mixed-method approach was applied through observations, interviews, and historical failure data analysis of the CW 62110B lathe at PT Bahari Makmur Sejahtera from March 2025 to April 2026. Critical components were identified based on failure frequency, downtime, production impact, and maintenance complexity. The results identified six critical components with an MTBF of 220.8 operating hours. The proposed inspection standard defines inspection parameters, methods, inspection frequency, and maintenance actions, and was validated using historical failure data and the principles of ISO 17359:2018.

SISTEM MONITORING DAN KONTROL POMPA PENDORONG BERBASIS IOT PADA GEDUNG BERTINGKAT

Balqis Akhira, Sisiliya Agustinawati, Indra Dwisaputra, Monischa Br Sebayang — Fri, 21 Aug 2026 00:00:00 +0700

This study aims to design a prototype of an Internet of Things (IoT)-based booster pump monitoring and control system using ESP32 to support water distribution in multi-story buildings. The system consists of an ultrasonic sensor, pressure sensor, flow meter, BTS7960 driver, relay, 20×4 I2C LCD, and the Blynk app as a medium for remote monitoring and control. The research methods include system design, implementation, and testing. The test results showed an average accuracy of the ultrasonic sensors at 93.62% and 95.16%, while the automatic control function, manual control via Blynk, and system parameter monitoring achieved a 100% success rate. These results indicate that the system can monitor water distribution conditions in real-time and control pump operations both automatically and manually, thus improving the effectiveness of IoT-based water distribution management.

KARAKTERISTIK GETARAN GENERATOR PADA KASUS UNBALANCE BERDASARKAN DATA VIBROPORT DAN MEMS AKSELEROMETER ADXL345

Rio Farhan, Lalito Prayoga, Angga Sateria, Muhammad Riva'i — Fri, 21 Aug 2026 00:00:00 +0700

This study aims to analyze the vibration characteristics of a 3 kW generator due to unbalance and to compare the performance of the Vibroport 80 vibration meter with the ESP32-based MEMS ADXL345 accelerometer sensor. Unbalance conditions were created by adding 10 g, 15 g, and 20 g of mass to the generator fan at a rotational speed of ±1,491 RPM (24.8 Hz). Radial vibration data were processed using the Fast Fourier Transform (FFT) method to obtain frequency spectra and velocity RMS values. The results show that unbalance is characterized by dominant amplitude at the 1×RPM frequency (24.8–25.0 Hz), which increases proportionally with added mass, reaching 1.89 mm/s, 2.11 mm/s, and 2.81 mm/s (Vibroport). Comparison between the two instruments shows good agreement in dominant frequency identification, with deviations of 0–0.59 Hz, although ADXL345 amplitude values tend to be slightly lower, with average deviations of 0.20–0.66 mm/s. Therefore, the ADXL345 sensor has potential as a low-cost vibration monitoring tool for detecting dominant frequency trends caused by unbalance, although further calibration is required for absolute amplitude accuracy.

PENERAPAN METODE FMEA PADA PERAWATAN SISTEM MEKANIK KAPAL ISAP PRODUKSI TIMAH

Jumanda Ahmad Al Fatah, Muhammad Riva'i — Fri, 21 Aug 2026 00:00:00 +0700

Offshore tin mining operations by PT Timah Tbk rely heavily on the operation of Tin Suction Dredgers (KIP). However, the corrosive marine environment and high workloads make the KIP's mechanical systems prone to failures, resulting in significant operational downtime. This study aims to identify the types and causes of mechanical system failures on the KIP Timah 07 vessel, determine component risk levels using the Failure Mode and Effects Analysis (FMEA) method, and formulate appropriate preventive maintenance recommendations. Research data was derived from downtime logbook records spanning 17 months (January 2025 – May 2026). Analysis results indicate that mechanical system malfunctions accounted for 36.97% (3,182.0 hours) of the vessel's total downtime. The three systems contributing the most to mechanical downtime were the GDO cutter and gearbox (33.03%), the HCL gearbox (26.76%), and the GDO cutter coupling (13.81%). Based on Risk Priority Number (RPN) calculations, three failure modes were identified as having the highest priority for intervention: GDO cutter motor/drive failure (RPN = 336), soil pump joint breakage/failure (RPN = 288), and soil pump bearing issues (RPN = 245). Proposed recommendations include implementing a scheduled preventive maintenance program for the GDO cutter, conducting periodic Non-Destructive Testing (NDT) inspections on joints, and performing vibration monitoring on soil pump bearings.

ALAT PENGHITUNG JUMLAH NOMINAL UANG KERTAS DENGAN OUTPUT SUARA UNTUK LANSIA BERBASIS ARDUINO

Fri, 21 Aug 2026 00:00:00 +0700

As life expectancy in Indonesia increases, the elderly population continues to grow. However, this is often accompanied by a decline in physical functions, particularly visual acuity, which hinders their financial independence in recognizing and counting banknote denominations during transactions. This research aims to design and implement an Arduino Uno-based banknote counting device with audio output that is easy for the elderly to operate. The system utilizes a TCS230 color sensor to identify banknote values based on RGB (Red, Green, Blue) color characteristics at an optimal scanning distance of 2 cm. Other main components include a DFPlayer Mini module and speaker for human voice feedback, along with a 16x2 LCD screen with an I2C module to display total balance accumulation. The device was tested using 7 Rupiah banknote denominations (IDR 1,000 to IDR 100,000) across old and new emission series. Test results demonstrate that the TCS230 sensor algorithm accurately distinguishes each banknote based on RGB ranges stored in the microcontroller. The clear audio output significantly enhances elderly independence without requiring them to read small numerals on currency or screens.

MODIFIKASI SISTEM TRANSMISI DAN SALURAN INLET PEMBANGKIT LISTRIK ARCHIMEDES SCREW TURBINE

Adam Darmansyah, Nitisemito Nitisemito, Ramli Ramli, Zanu Saputra — Fri, 21 Aug 2026 00:00:00 +0700

Utilizing renewable energy is an important solution to meet the need for sustainable and environmentally friendly electrical energy. One of the increasingly developed small-scale hydroelectric power generation technologies is the Archimedes Screw Turbine (AST). Modifying the Archimedes screw turbine in the transmission system and inlet duct to produce the desired rotational speed and power. The results of the modification process are determined by measuring the rpm and power generated. The implementation method used in this research begins with problem identification, data collection, analysis of the previous machine, the modification process, testing, data analysis, conclusions, and completion. The results of the testing process obtained a turbine rotation of 448 rpm and a generator output power of 26.88 volts.

RANCANG BANGUN SISTEM AKUAPONIK BERBASIS INTERNET OF THINGS DENGAN MEMANFAATKAN PEMBANGKIT LISTRIK TENAGA SURYA

Aldi Julianto, Zakiyan Adiasyah, Eko Sulistyo, Badriyah Badriyah — Fri, 21 Aug 2026 00:00:00 +0700

Aquaponics is a cultivation system that integrates fish and plants into a mutually beneficial ecosystem. This study aims to design and develop an Internet of Things (IoT)-based aquaponics system powered by a Photovoltaic (PV) solar energy system as the primary energy source. The system employs an ESP32 microcontroller integrated with pH, DHT22, LDR, and MQ-135 sensors to monitor system conditions in real time through the Blynk application. The experimental results showed that the pH sensor achieved an average error of 0.28%, while the DHT22 sensor provided reliable temperature and humidity measurements. In addition, the LDR and MQ-135 sensors successfully responded to changes in light intensity and ammonia concentration under different testing conditions. The photovoltaic system produced a maximum output power of 48 W, which was sufficient to supply the electrical demand of the aquaponics system. These results indicate that the proposed system is capable of real-time monitoring while utilizing renewable solar energy as an independent power source, making it a promising solution for efficient and environmentally sustainable aquaponics management.

EVALUASI PEMELIHARAAN MESIN BUBUT DI WORKSHOP PT BAHARI MAKMUR SEJAHTERA UNTUK STANDARDISASI AUTONOMOUS MAINTENANCE

Dini Marlika Aprilia, Indra Feriadi, Rodika Rodika — Fri, 21 Aug 2026 00:00:00 +0700

Consistent basic maintenance is required to maintain lathe condition. This study evaluates the actual routine maintenance condition of a lathe at the Workshop of PT Bahari Makmur Sejahtera based on Autonomous Maintenance standards. A descriptive approach was used through observation, interviews, documentation, initial cleaning, identification of abnormalities and contamination sources, and analysis of standardization needs. Observations revealed accumulated chips, dust, and lubricant residue, the absence of maintenance standards, a non-functioning automatic feed handle, and an improperly aligned machine table. These findings formed the basis for recommendations covering maintenance areas, methods, frequencies, criteria, corrective actions, and responsibilities. The evaluation identified a gap between the actual condition and the characteristics of structured Autonomous Maintenance. Follow-up recommendations include standardization of cleaning, lubrication, inspection, checklists, and abnormality identification as a basis for autonomous lathe maintenance.

MEDIA PEMBELAJARAN OUTSEAL PLC NANO V.5

Ramdanil Ramdanil, Riris Mutiya, Zanu Saputra, Riztamala Diana — Fri, 21 Aug 2026 00:00:00 +0700

Advancements in industrial automation technology necessitate learning tools that enhance students' understanding of control systems based on Programmable Logic Controllers (PLCs). This study involved the design of an Outseal PLC Nano V.5 trainer kit paired with a Modbus HMI application to serve as a learning aid for industrial control and automation systems. The system utilizes the Outseal PLC Nano V.5—programmed via ladder logic—and connects to an Android-based Modbus HMI application using the Modbus RTU protocol over a Bluetooth HC-06 module for real-time monitoring and control. Testing results demonstrate that all input, output, and communication components function according to the program; the proximity sensor detects objects within a 1–5 mm range, the photoelectric sensor operates up to 30 cm, and the Modbus HMI application successfully displays PLC status in real-time. Based on functional testing of all components and questionnaire results from 10 respondents—indicating an 80% ease-of-use rating. The trainer kit is deemed suitable for use as a learning tool for Outseal PLC Nano V.5-based systems utilizing the Modbus HMI application.

RANCANG BANGUN ALAT PENENUN SERAT SAWIT -KEVLAR

Ashadi Rullah, Herwandi Herwandi, Adhe Anggry — Fri, 21 Aug 2026 00:00:00 +0700

The manual weaving process for composite materials combining natural fibers (palm fibers) and synthetic fibers (Kevlar) faces significant challenges in maintaining yarn tension stability and weave density due to the differing mechanical characteristics of the two materials. To date, the production of such composite weaves has been carried out manually without specialized equipment, resulting in inconsistent quality. This research aims to design and construct a manual weaving device optimized for producing palm fiber-Kevlar composites, ensuring an orderly yarn arrangement and good weave density. The design methodology follows the VDI 2222 standard, encompassing the planning, conceptualization, design, and finalization (fabrication) stages. The device is constructed using hollow steel sections, with key components including the main frame, a yarn winding mechanism, and a weaving reed. Test results demonstrate that the device functions effectively in arranging palm fibers and Kevlar into a weave that is neater and denser than that produced by manual methods without equipment. Although minor issues arose during fiber insertion due to the fibrous nature of the materials, the device successfully improved the overall effectiveness and consistency of composite material production for research-scale applications.

PERANCANGAN ALAT STERILISASI AIR KOLAM IKAN MENGGUNAKAN TEKNOLOGI OZONE

Fakhrul Hendri, Muhammad Bayu Adjie Dhiastra, Peprizal Peprizal, Lesta Lesta — Fri, 21 Aug 2026 00:00:00 +0700

Water quality is a crucial factor affecting the growth, health, and survival of koi fish. This study aimed to design and implement a fish pond water sterilization system using ozone technology based on the ESP32 microcontroller and the Internet of Things (IoT) for real-time water quality monitoring. The proposed system consists of an ESP32, DFRobot pH sensor, DFRobot turbidity sensor, ACS712 current sensor, ZMPT101B voltage sensor, ozone generator, two water pumps, aerator, relay module, 16×2 I²C LCD, and Node-RED platform. The Research and Development (R&D) method was employed, including system design, hardware implementation, testing, and data analysis. Experimental results showed that the water pH increased from 6.8 to 7.4, while turbidity decreased from 100% to 0% after 60 minutes of ozone treatment. A four-day observation of four koi fish confirmed normal survival throughout the testing period. The developed system effectively improved water quality and enabled real-time IoT-based monitoring.

MODIFIKASI MESIN PEMOTONG KERIPIK UNTUK MENINGKATKAN PRODUKTIVITAS DAN KUALITAS PRODUKSI PADA UKM DI KEPULAUAN BANGKA BELITUNG

Fri, 21 Aug 2026 00:00:00 +0700

The small and medium enterprise (SME) sector in tuber chip processing in Bangka Belitung Islands Province holds significant economic potential yet is constrained by conventional production processes, particularly at the cutting stage. This study applies an applied-engineering design method carried out systematically through five stages: problem identification, existing-machine analysis, design and technical calculation, fabrication, and field testing, to modify a chip-cutting machine and thereby improve slice uniformity, production capacity, and food safety compliance. Modifications include replacing the drive system with a 0.5–1 HP single-phase electric motor, optimising a V-belt and pulley transmission, and redesigning the blade mechanism using food-grade stainless steel SS 304. The frame was upgraded using 40×40×3.8 mm angle iron. Technical calculations show the required motor power is 0.037 kW with a blade shaft speed of 485 RPM from a transmission ratio of 1:2.9. The modified machine increases production capacity from 5 kg/h to 10 kg/h with slice thickness variation not exceeding ±1.5 mm.

RANCANG MESIN PEMOTONGAN DAGING AYAM BERPENGGERAK MOTOR LISTRIK UNTUK MENINGKATKAN EFISIENSI PRODUKSI AYAM KRISPI

Fri, 21 Aug 2026 00:00:00 +0700

The increasing demand for crispy chicken products requires business actors to enhance production capacity while maintaining the quality of chicken cuts. The cutting process, which is still performed manually, has several drawbacks, including relatively long processing time, inconsistent cut results, as well as the risk of fatigue and work accidents for operators. This study aims to design an electrically driven chicken cutting machine that can improve the efficiency of crispy chicken production. The method used, VDI 2222, includes data collection, concept creation, designing, and completion. The design process is carried out by considering aspects of function, safety, ergonomics, ease of maintenance, and the needs of SMEs. The design results show that the machine is designed using a 1 HP electric motor as the main drive with a cutting system in the form of a 230 mm diameter circular knife. The test results show that the machine is capable of cutting a 1.5 kg chicken into six pieces within 25 seconds, with an actual capacity reaching 180 kg/hour. The actual capacity achieved is approximately 90% of the design capacity. This difference is influenced by several operational factors that were not accounted for. The machine produces relatively uniform cuts, accelerates the cutting process, and reduces the operator's workload. Thus, this chicken cutting machine can serve as an appropriate technology solution that supports increased productivity in the crispy chicken business.

RANCANG BANGUN MINIATUR TRANSPORTER SMART CAR DENGAN ROBOT ARM NIRKABEL SEBAGAI PENGANGKUT SAMPAH

Fri, 21 Aug 2026 00:00:00 +0700

Waste transportation is still largely performed manually, making the process less effective, especially in narrow and hard-to-reach areas. Previous studies generally employed 4-Degree of Freedom (4-DOF) robotic arms based on the Arduino Uno, which have limitations in movement flexibility and wireless communication capabilities. This study aims to design and develop a miniature smart car transporter based on the ESP32 Max integrated with a 5-DOF robotic arm. The research method includes system design, hardware assembly, programming, system integration, and performance testing. The test results show that the system is capable of picking up, lifting, and transporting waste replicas weighing up to 100 grams and can operate for approximately 40 minutes on a single battery charge. The developed system performs well as a robotics-based waste transportation simulation platform.

SISTEM PENGAMANAN SMART LOCKER HELM BERBASIS AUTENTIKASI SIDIK JARI DAN KARTU TANDA MAHASISWA

Gustya Gustya, Bintang Abdi Nugraha, Zanu Saputra, Mahmudin Mahmudin — Fri, 21 Aug 2026 00:00:00 +0700

Helmet theft on university campuses remains a problem because conventional storage systems do not provide adequate security. This study aims to design and implement a smart helmet locker security system based on dual authentication using biometric fingerprint identification and Radio Frequency Identification (RFID)-based Student Identity Cards. The system was developed using an ESP32 integrated with an RFID RC522 module, an AS608 fingerprint sensor, a relay module, a solenoid door lock, an LCD, and a Telegram Bot. The research methodology included a literature review, requirements analysis, system design, implementation, and evaluation using system testing and black-box testing. The test results showed an RFID reading success rate of 100% and a fingerprint authentication success rate of 95%. The average access response time was 1.2 seconds, while the solenoid door lock opening time was 3 seconds. Communication between the ESP32 Master and ESP32 Slave achieved a 100% data transmission success rate. The results indicate that the proposed system enhances access security, simplifies monitoring, and provides a safer and more reliable helmet storage solution for university campuses.

RANCANGAN DESAIN PENGHAPUS TULIS OTOMATIS BERBASIS MIKROKONTROLER ARDUINO UNO

Fri, 21 Aug 2026 00:00:00 +0700

Whiteboards serve as the primary instructional medium in classrooms. However the manual cleaning process often wastes time. To address this issue, an automated whiteboard eraser system for a 50x70cm board was developed using the Research and Development (R&D) method, with a system cleanliness rate reaching 95% in erasing writings on the whiteboard. The device relies on motor dynamos to drive its horizontal and vertical movement mechanisms. To restrict the erasing range while calibrating the initial position, the systems utilizes two limit switches (NO and NC). Test results indicate successful integration of all components. The device evenly sweeps the board surface within a single operational cycle and automatically returns to its initial position, making the learning process both efficient and hiegenic.Performance testing indicates that the average duration of the sweeping movement varies between 3 to 23 seconds depending on the tested cycle variation and mechanical direction.

SISTEM PENDETEKSI TANGISAN BAYI UNTUK MENENTUKAN KONDISI GROWTH SPURT

Tegar Pramudia, Fadliyansyah Ramadhan, Evvin Faristasari, Ni Luh Eta Yuspita — Fri, 21 Aug 2026 00:00:00 +0700

A growth spurt is a developmental phase experienced by infants, characterized by increased crying frequency, changes in sleep patterns, and heightened nutritional needs. Parents often struggle to distinguish between crying caused by a growth spurt and crying due to hunger, a wet diaper, or other forms of discomfort. Therefore, this study aims to design and build an infant cry detection system to automatically indicate when a growth spurt is occurring. The developed system utilizes an ESP32 as the main microcontroller and a sound sensor (microphone) as the input to detect the intensity of the infant's crying. Sensor data is processed by the ESP32 based on pre-programmed parameters to determine the likelihood that the infant is experiencing a growth spurt. Detection results are displayed on a 16×2 LCD with an I2C interface, ensuring the information is easily readable for the user. Additionally, an active buzzer serves as an audible indicator when the system detects conditions meeting the growth spurt criteria. The entire circuit is powered by a power bank, making the system portable and suitable for use in various locations.

PENENTUAN PRIORITAS PEMELIHARAAN KOMPONEN SISTEM PENGERUK KAPAL ISAP PRODUKSI TIMAH 07 MENGGUNAKAN ANALISIS PARETO

Jendri Winata, Indra Feriadi, Tuparjono Tuparjono — Fri, 21 Aug 2026 00:00:00 +0700

The dredging system is a major subsystem of the Production Suction Dredger (KIP) that significantly affects mining operational continuity. This study aims to identify maintenance priority components based on historical failure data and determine component priorities using Pareto analysis as a basis for developing maintenance strategies. A quantitative descriptive method was employed using historical failure data of the KIP 07 dredging system during 2025, including failure frequency and downtime records. The data were analyzed using Pareto analysis based on each component's downtime contribution and subsequently validated through practitioner confirmation. The results revealed 104 failure incidents with a total downtime of 700.5 hours. Six priority components—pump bearing block, pump joint shaft, cutter bearing block, suction pipe, discharge pipe, and ladder—accounted for 80.87% of the total downtime. These findings provide a practical basis for prioritizing inspections and developing more effective maintenance strategies.

ANALISA KEBUTUHAN TORSI MOTOR PADA MESIN PEMOTONG RUMPUT KENDALI REMOTE CONTROL BERBASIS MESIN BENSIN

Fri, 21 Aug 2026 00:00:00 +0700

Manual grass cutting still poses a high risk of occupational accidents due to direct contact with cutting blades and flying debris. This study aims to analyze the motor torque requirement of a gasoline-powered remote-controlled grass cutting machine to determine the suitability of the selected motor for the operating load. The research employed an analytical calculation method based on design parameters, including a machine mass of 150 kg, a wheel diameter of 15 inches (0.381 m), a rolling resistance coefficient of 0.05, and four 24 V 500 W DC motors equipped with gearboxes operating at an output speed of 200 rpm. The results indicate that the rolling resistance force is 73.58 N, requiring a wheel torque of 14.03 Nm. Each motor produces a torque of 23.88 Nm, resulting in a total available torque of 95.52 Nm from the four motors. The available torque exceeds the required torque, demonstrating that the selected motor configuration is capable of driving the machine effectively. These findings provide a technical basis for selecting an appropriate drive motor in the development of safe, reliable, and efficient remote-controlled gasoline-powered grass cutting machines.

BANGUN SISTEM MONITORING FILTRASI AIR KOLONG BEKAS TAMBANG BERBASIS SENSOR pH, TDS, DAN KEKERUHAN

Fri, 21 Aug 2026 00:00:00 +0700

Water in former tin-mining pits in the Bangka Belitung Islands generally has a low pH, high total dissolved solids (TDS), and turbidity levels that do not meet the clean water quality standards stipulated in Minister of Health Regulation of the Republic of Indonesia No. 2 of 2023. Therefore, an automated treatment system is required to monitor and improve water quality. This study aims to design a monitoring and filtration system for pit water based on pH-4502C, TDS Meter V1.0, and AZDM01 turbidity sensors integrated with a Raspberry Pi Pico microcontroller. The system is equipped with two filtration chambers (physical and chemical), an automatic backwash mechanism using a solenoid valve, and a closed-loop control system. The research employed a Research and Development (R&D) approach with an experimental component. Calibration results showed that the pH and TDS sensors achieved accuracies of 99.21% and 99.07%, respectively. Testing on three pit-water samples resulted in average sensor accuracies of 99.56% for pH and 95.65% for TDS. Meanwhile, the turbidity sensor indicated a consistent reduction in turbidity of 39.6–50.3% after seven filtration stages. The system demonstrated its ability to progressively improve the quality of pit water.

ALAT DAN KONTROL SUHU, GAS, KELEMBAPAN DAN INTENSITAS CAHAYA PADA FERMENTASI RUSIP BERBASIS IOT

Apriyansah Apriyansah, Zaldi Rli Yanto, Indra Dwisaputra, Dora Palupi — Fri, 21 Aug 2026 00:00:00 +0700

Rusip fermentation is a traditional fish fermentation process whose quality is influenced by temperature, humidity, light intensity, and gas concentration. Conventional manual monitoring makes the fermentation process less effective. This study aims to develop an Internet of Things (IoT)-based monitoring and control system for rusip fermentation using an ESP32 microcontroller. The system integrates a DHT11 sensor for measuring temperature and humidity, an MQ-135 sensor for gas detection, a GY-30 (BH1750) sensor for measuring light intensity, and an I2C LCD, Telegram, and Blynk for real-time monitoring. Sensor performance was evaluated by comparing the DHT11 with a UT333 Mini Temperature Humidity Meter and the GY-30 with a Benetech GM1030C Lux Meter. The results showed measurement differences of 0.2°C for temperature, 3% RH for humidity, and 0.9 Lux for light intensity. One-week monitoring showed temperatures ranging from 28.70°C to 30.06°C, humidity from 83.40% to 87.70% RH, light intensity from 3.33 to 51.67 Lux, and gas concentration from 1,038 to 1,487 ppm. The proposed system successfully performed real-time monitoring and control, enabling users to remotely monitor the rusip fermentation process.

SISTEM MONITORING KONSUMSI AIR DAN LISTRIK DENGAN ESTIMASI BIAYA REAL-TIME

Endy Legita Pratama, Fadilah Nur Mardiah, Zanu Saputra, Nur Khasanah — Fri, 21 Aug 2026 00:00:00 +0700

The increasing consumption of water and electricity in households requires a system capable of monitoring usage and estimating costs in real-time. This study aims to design an Internet of Things (IoT)-based water and electricity consumption monitoring system using two ESP32 microcontrollers, a PZEM-004T sensor for measuring electrical parameters, a YF-S201 flow meter sensor for measuring water discharge and volume, and the Blynk application as a monitoring medium. Testing was carried out by comparing the sensor readings to reference measuring instruments and testing data transmission to the application. The test results showed that the PZEM-004T sensor had an average error of 2.68%, while the YF-S201 sensor had an average error of 1.03%. All electrical parameters, water usage, and cost estimates were successfully displayed in the Blynk application in real-time, and the system was able to control the electrical load and water flow according to predetermined usage limits. The results of the study indicate that the developed system can be used as a medium for monitoring and controlling water and electricity consumption to support more efficient energy use.

IMPLEMENTASI AWAL SISTEM PEMBACAAN WATER METER OTOMATIS MENGGUNAKAN SENSOR FLOW METER DAN IOT

Fri, 21 Aug 2026 00:00:00 +0700

The increasing demand for clean water requires a monitoring system that is more accurate and practical. Manual water meter recording still has several weaknesses, such as delayed readings, possible recording errors, and the lack of real-time monitoring. This study discusses the design of an Internet of Things (IoT)-based automatic water meter reading system using a flow meter sensor to measure water flow rate and volume. The system was developed using a YF-S201 flow meter sensor, an ESP32 microcontroller, and the Blynk application as a monitoring platform. The research process includes hardware design, microcontroller programming, sensor testing, and result analysis. The test results show that the system can display flow rate, water consumption volume, and estimated usage cost in real-time through the Blynk application. The system also produces readings that are fairly close to those of a conventional water meter. Therefore, the developed system can be an alternative solution to support water usage monitoring in a more efficient and remotely accessible way.

ANALISIS KERUSAKAN SISTEM KELISTRIKAN DAN MEKANIK MESIN FRAIS ACIERA F3 METODE 5 WHY

Fri, 21 Aug 2026 00:00:00 +0700

A milling machine is an essential machine tool in practical laboratory activities due to its ability to produce components with high precision. However, excessive use and aging of the machine can lead to failures that reduce its performance and disrupt learning activities. This study was conducted to analyze and identify the root causes of failures in the mechanical and electrical systems of the Aciera F3 milling machine using the 5 Whys approach. The research methodology involved direct observation, interviews with technicians, visual inspections, and electrical testing using a multimeter and test pen. The 5 Whys method is a root cause analysis technique that identifies the underlying causes of a problem by repeatedly asking the question "why" until the fundamental cause is determined. This approach helps reveal the relationship between observed symptoms and their actual causes, enabling appropriate corrective actions to be established. The results indicate that the 5 Whys method is effective in supporting the identification of root causes and the development of suitable corrective maintenance measures. After the corrective actions were implemented, the system was able to operate normally again, and the machine could be used according to operational standards.

ANALISIS AKAR PENYEBAB GETARAN BERLEBIH PADA MOTOR LISTRIK MESIN BUBUT GEMINIS GE5-650S DENGAN METODE FIVE WHYS

M Nopal Alhafiz, Faiz Alamsyah, Indra Feriadi, Ariyanto Ariyanto — Fri, 21 Aug 2026 00:00:00 +0700

The electric motor of the Geminis-GE 5-650 S lathe machine experienced excessive vibration that persisted despite two bearing replacement attempts. This study aimed to identify the root cause of the excessive vibration using the 5 Whys method. Data were collected through visual inspection, vibration measurement, technician interviews, and a review of the equipment manual. The collected data were then systematically analyzed using the 5 Whys method to trace the cause-and-effect relationship until the root cause was identified. The analysis revealed that the excessive vibration was not caused by bearing failure but by wear on the shaft bearing seat resulting from a previous repair. The wear reduced the shaft dimensions, increased the radial clearance, disrupted rotor rotational stability, and ultimately generated excessive vibration. These findings explain why previous bearing replacements failed to eliminate the vibration, as they did not address the actual root cause of the problem. Based on these findings, shaft restoration or replacement is recommended, together with the implementation of standardized repair procedures, post-repair inspections, and also strengthening preventive maintenance program to minimize the risk of similar failures in the future.

SISTEM PEMADAM API OTOMATIS PADA PANEL DISTRIBUSI LISTRIK BERBAIS INTERNET OF THINGS (IOT)

Panny Pahrezy, Robul Ardiansyah, Enggar Hero Istoto, Limartaida Siahaan — Fri, 21 Aug 2026 00:00:00 +0700

Fires in electrical distribution panels are often triggered by temperature fluctuations, power disturbances, or the emission of gas and smoke. To mitigate these potential hazards, an IoT-based automatic fire suppression system controlled by an ESP32 microcontroller was designed. The system integrates DS18B20 (temperature), MQ-2 (smoke/gas), flame, and voltage (battery monitoring) sensors to categorize operational status into normal, warning, or danger conditions. Technical testing established the temperature warning threshold at >50°C, while the MQ-2 sensor activates when the ADC reading reaches 375 or higher; the flame sensor has a detection range of 10 to 40 cm. The system demonstrates high responsiveness, with a delay of only 0.8 seconds between flame detection and the fire extinguisher actuator discharging the suppression agent. Another key feature is real-time data connectivity to an Android application via the Firebase Realtime Database. Overall, this innovation proves effective as a solution for early detection and initial fire response in electrical infrastructure.

RANCANG BANGUN MEDIA PEMBELAJARAN SIMULASI KERUSAKAN BEARING BERBASIS ANALISIS GETARAN

Ari Togar Maulana, Muhamad Fikri, Ariyanto Ariyanto, Masdani Masdani — Fri, 21 Aug 2026 00:00:00 +0700

The development of Industry 4.0 has shifted maintenance strategies from corrective maintenance to predictive maintenance based on machine condition monitoring. Vibration analysis is widely used to detect machine failures before unexpected breakdowns occur. However, limited learning media in predictive maintenance courses reduce students' practical understanding of bearing fault characteristics. This study aims to design a vibration-based bearing fault simulation learning media to support practical learning activities. The research methods include data collection, tool design, manufacturing, assembly, and testing. The developed system consists of an AC motor, shaft, coupling, bearing housing, speed controller, and bearings with several fault conditions. The results indicate that the system can simulate inner race, outer race, and rolling element defects, producing different vibration characteristics. Therefore, the proposed learning media can improve students' understanding of predictive maintenance and vibration analysis in a practical manner.

PENERAPAN METODE AQUEOUS PADA PROSES PENCUCIAN BEARING DALAM KEGIATAN PEMELIHARAAN MESIN DI PT TIMAH TBK UNIT SUNGAILIAT

Fri, 21 Aug 2026 00:00:00 +0700

Bearing is a shaft-supporting component that withstands radial and axial loads, making its cleanliness crucial for machine reliability. At PT Timah Tbk Unit Sungailiat, bearing cleaning is still carried out manually using diesel fuel, a method that is time-consuming, dependent on operator skills, and poses risks to health and safety. This final project applies a bearing washing machine with an agitation system based on aqueous cleaning, which uses water-based solutions combined with industrial detergents, as a safer and more efficient alternative. The construction includes the frame, power transmission system, main shaft and taper, bearing housing and seal, as well as a locking plate, which are then assembled and tested through no-load functional tests, load functional tests, and cleaning effectiveness tests on ball bearings and cone bearings. Additional evaluation was conducted through questionnaires with 13 respondents regarding design, ease of operation, cleaning effectiveness, work efficiency, and safety. The results show that the machine operated properly in both no-load and load tests. The average cleanliness level of bearings reached more than 90% within 10–15 minutes of washing. User evaluation scores were: ease of operation 4.6; design and ergonomics 4.3; cleaning effectiveness 4.4; work efficiency 4.3; and safety 4.0. Therefore, aqueous cleaning is feasible to be applied as an alternative to conventional cleaning methods, as it is more effective, safer for operators, and environmentally friendly, although improvements in safety and equipment stability are still required.

RANCANG DESAIN KOMPOSTER ELEKTRIK SKALA SAMPAH RUMAH TANGGA

Fitriyani Efeni, Rafandu Dwi Alghifari, Zanu Saputra, Ade Putra Maulana — Fri, 21 Aug 2026 00:00:00 +0700

Managing household organic waste accumulation remains an environmental challenge requiring technological solutions that are appropriate, efficient, innovative, and rapid. This study aims to design, construct, and test the performance of an automatic electric composter based on the ESP32 microcontroller, fully integrated with a 100-Watt PTC heating system, a 150-Watt AC motor for primary shredding, and an IoT-based remote monitoring system using the Blynk application. Comprehensive testing was conducted to evaluate the effectiveness of the initial waste shredding mechanism and the temperature rise within the composting chamber. Hardware performance results demonstrated that the mechanical shredding process operated with high precision according to the microcontroller's automatic timer settings, specifically over a 5-minute interval. Furthermore, the PTC heating system successfully raised the composting chamber's temperature gradually and consistently, starting from an initial 37.19°C and reaching a maximum setpoint of 40.00°C. Additionally, sensors recorded a peak temperature spike of 40.44°C due to residual heat accumulation after the relay cut off power to the heater. In that test confirmed that daily temperature data transmission to the Blynk dashboard and the automatic actuation of the discharge door via an servo motor operated in real-time without latency issues. In conclusion, this IoT-integrated electric composter functions optimally according to the initial design, making it suitable for immediate implementation to accelerate the processing of daily household organic waste in a smart and eco-friendly manner.

MODIFIKASI MESIN PENCACAH SAMPAH PADA TIVA DENGAN INOVASI KONTROL KECEPATAN MOTOR LISTRIK DAN MONITORING DAYA BERBASIS ARDUINO

Fri, 21 Aug 2026 00:00:00 +0700

The management of organic waste in the campus environment, particularly at the Teaching Industry (TIVA) of the Agricultural Study Program at Politeknik Manufaktur Negeri Bangka Belitung (Polman Babel), requires effective and efficient solutions. The existing waste shredding machine still has limitations, especially in terms of motor speed control and electrical power consumption monitoring. Therefore, this study aims to modify the waste shredding machine by implementing an electric motor speed control system and power monitoring based on Arduino.The methods used include system design using an Arduino microcontroller, sensor integration for power monitoring, and performance testing before and after modification. The motor speed control system is designed to adjust rotation according to the type and load of the waste being processed, while the power monitoring system provides real-time energy consumption data. The results show that the modification improves the machine’s performance, making it more efficient and flexible. The motor speed control produces more optimal shredding results, while power monitoring helps manage electrical energy usage. Thus, this innovation is expected to support better and more sustainable waste management on campus.

PERANCANGAN MEDIA AJAR PREDICTIVE MAINTENANCE BERDASARKAN GETARAN

Reyvan Arielka, Vicky Ahmad Rozi, Fajar Aswin, Muhammad Riva'i — Fri, 21 Aug 2026 00:00:00 +0700

Perawatan prediktif (predictive maintenance) merupakan strategi pemeliharaan berbasis kondisi yang bertujuan mendeteksi potensi kerusakan mesin sebelum terjadi kegagalan. Ketersediaan media ajar uji getaran bearing di bengkel mekanik saat ini masih terbatas dan hanya dapat digunakan dengan sensor Vibroport tertentu, sehingga pelaksanaan praktikum kurang efektif. Penelitian ini bertujuan merancang dan membuat media ajar uji getaran bearing yang fleksibel menggunakan sensor MEMS ADXL345 berbiaya rendah dengan mikrokontroler ESP32. Media ajar menggunakan motor listrik 0,25 HP sebagai penggerak, poros baja Ø20 mm, pillow block bearing UCP204, bearing 6205, serta sistem akuisisi data berbasis ESP32. Metode analisis yang digunakan adalah Fast Fourier Transform (FFT) untuk mengidentifikasi karakteristik frekuensi getaran. Hasil pengujian menunjukkan frekuensi dominan sebesar 23,33 Hz yang sesuai dengan frekuensi putaran motor 1400 RPM. Sensor ADXL345 terbukti mampu mendeteksi karakteristik getaran bearing pada kondisi normal maupun kondisi gangguan. Media ajar ini memberikan alternatif pembelajaran yang lebih ekonomis, fleksibel, dan meningkatkan kesempatan mahasiswa untuk melakukan pengukuran secara mandiri pada mata kuliah Predictive Maintenance.

ALAT PENCEKAM UJI BALISTIK DENGAN KOMPOSIT SERAT SAWIT - KEVLAR UNTUK UJI BALISTIK

Refal Kusriandi, Sugianto Sugianto, Herwandi Herwandi — Fri, 21 Aug 2026 00:00:00 +0700

Ballistic testing is used to evaluate a material's ability to withstand high-velocity projectile impacts. One of the primary challenges in the testing process is the difficulty of installing fiber specimens, which can impact specimen stability and test accuracy. This study aims to design and develop a ballistic testing clamping device that simplifies the installation of fiber specimens. The research employed the VDI 2222 design method, including data collection, planning, concept development, design, manufacturing, assembly, testing, and evaluation. The result is a clamping device that facilitates fiber specimen installation, improves specimen stability, and supports a more effective and accurate ballistic testing process.

RANCANG BANGUN MESIN PEMOTONG RUMPUT DENGAN SISTEM KENDALI REMOTE CONTROL

Fri, 21 Aug 2026 00:00:00 +0700

Abstract is arranged in one paragraph, single line spacing with Times New Roman Italic fonts. Abstract contains a brief narrative background to the problem, explaining the aims and objective of the research or study in general. A brief overview of method is presented along with how the analysis is performed. Results are presented in a concise and coherent manner according to the order of the method, the main points or important findings of the research. The abstract is then summarized into a conclusion according to the research objectives. Abstract is written in not more than 200 words. The entire manuscript is prepared in not more than 7 pages, in one column using Times New Roman fonts in 12 sizes with 4cm of left and top margin and 3 cm for right and bottom margin. Page numbers are written in Arabic numeral system and located in the bottom right corner of each page Grass area maintenance is generally carried out using conventional lawn mowers that require operators to remain close to the working area, thereby increasing safety risks. This study aims to design and evaluate a remote-controlled lawn mower based on the Arduino Mega 2560. The system consists of an Arduino Mega 2560, a FlySky FS-R6B receiver, BTS7960 motor drivers, two 12 V 250 W DC motors, and an ultrasonic sensor for obstacle detection. Performance testing was conducted to evaluate the machine's mobility, mowing capacity, control system response, and ultrasonic sensor performance. The results showed that the machine traveled 10 m in 7.54 seconds, 20 m in 13.62 seconds, and 30 m in 21.18 seconds. It also mowed an area of 25 m² in 28 minutes, achieving a mowing capacity of 53.4 m²/h. The remote control system functioned properly for all movement directions, while the ultrasonic sensor successfully detected obstacles within the specified detection range. Based on these results, the developed remote-controlled lawn mower operated in accordance with the intended design.

RANCANG BANGUN MESIN PENGHANCUR ARANG TEMPURUNG KELAPA UNTUK MENINGKATKAN EFISIENSI PRODUKSI BRIKET

Fri, 21 Aug 2026 00:00:00 +0700

ABSTRACT

The Bangka Belitung Islands have significant potential for improving the utilization of organic waste, one of which is coconut shells that can be processed into charcoal. However, coconut shell charcoal still has relatively low quality and economic value, so it needs to be further processed into briquettes to increase its value. In this process, a coconut shell charcoal crusher machine serves as an important supporting tool. A survey conducted in Jelitik Village, Sungailiat, Bangka, revealed that most charcoal and briquette producers still use manual methods, which are inefficient in terms of labor and time. This study applies the VDI 2222 method, starting from problem identification through to detailed machine design. The aim is to design a coconut shell charcoal crusher machine that can accelerate the briquette-making process while ensuring good product quality. The machine is designed to crush 10 kg of charcoal within 10 minutes, operate continuously, and produce 6 kg of fine charcoal per cycle, with a particle size ranging from 0.1 mm to a maximum of 2 mm, in accordance with briquette standards.

PENERAPAN METODE 5 WHYS DALAM MENGIDENTIFIKASI PENYEBAB GANGGUAN SISTEM KELISTRIKAN PADA MESIN FRAIS ACIERA F3

Aditia Akbar Rianto, Aan Aji Saputra, Fajar Aswin, Hasdiansah Hasdiansah — Fri, 21 Aug 2026 00:00:00 +0700

The Aciera F3 milling machine is a vital tool in practical and production activities at the Mechanical Engineering Laboratory of the Bangka Belitung State Manufacturing Polytechnic. Damage to the electrical system resulted in the machine being unusable, which hampered the learning process. This study aims to identify the source of the damage and determine the appropriate repair method. The strategy implemented is Root Cause Analysis (RCA) with the 5 Whys method. Data were collected from interviews with technicians, literature studies, maintenance and repair records, and manuals. The research findings indicate damage to the vulnerable auxiliary contactor and broken terminals, resulting in a power outage to the control panel. The 5 Whys analysis indicates that the old component life and lack of regular replacement are suspected to be the main causes of the auxiliary contactor damage.

ROOT CAUSE ANALYSIS KERUSAKAN SISTEM PENGEREMAN SPINDEL MESIN FRAIS AJAX MODEL N2A MKV MENGGUNAKAN METODE 5 WHY

Riswanda Riswanda, Niko Julianto, Masdani Masdani, Fajar Aswin — Fri, 21 Aug 2026 00:00:00 +0700

The spindle braking system is one of the most important components in a milling machine because it stops spindle rotation immediately after machining. Failure of the braking system reduces operational safety, decreases machining efficiency, and accelerates component wear. This study aims to identify the root cause of spindle braking system failure in an Ajax Model N°2A M^KV milling machine using the Root Cause Analysis (RCA) method with the 5 Why approach. Data were collected through direct observation, machine manual review, electrical testing using a multimeter, and systematic root cause analysis. The results indicate that the braking system failed due to a short circuit in the electromagnetic motor coil, causing excessive current in the AC-to-DC braking circuit. Consequently, the bridge rectifier diode and fuse repeatedly failed. The root cause was identified as coil deterioration caused by prolonged service life. The 5 Why method effectively identified the root cause and provided a basis for corrective actions and preventive maintenance to improve machine reliability.

PERANCANGAN DAN IMPLEMENTASI INOVASI AYUNAN PADA TAMAN BERMAIN SEBAGAI PEMBANGKIT LISTRIK

Fri, 21 Aug 2026 00:00:00 +0700

Alternative energy utilization continues to develop, yet unoptimized potential remains, such as mechanical energy from children playing on swings in playgrounds. This energy can be converted into useful electricity through a conversion device. This study aims to design a motion-to-electricity conversion system for 12 V battery charging and monitoring using Arduino Uno. The methodology includes design, assembly, testing, and analysis. The system comprises a generator, rectifier, buck converter, battery, voltage sensor, ACS712 current sensor, I2C LCD, LED, and relay. Test results show the generator produces 0.07–1.19 V and 0 A, failing to charge the battery optimally. Average errors are 2.65% for voltage and 8.61% for current sensors. The monitoring system successfully displays data on the LCD and operates the LED and relay. In conclusion, the system functions properly, but a more suitable generator is required.

PENERAPAN METODE FAILURE MODE AND EFFECT ANALYSIS (FMEA) PADA SISTEM PERAWATAN JIG SCREEN KAPAL ISAP PRODUKSI TIMAH

Al Firzan Syaidani, Pristiansyah Pristiansyah — Fri, 21 Aug 2026 00:00:00 +0700

The Suction Production Vessel (KIP) Tin 07 owned by PT Timah Tbk relies on the Jig Screen System as a core component for separating cassiterite (tin ore) from waste material based on specific gravity differences. Maintenance of this system has so far been reactive, carried out only after breakdowns occur, resulting in unplanned production downtime and potential financial losses. This final project aims to identify the types, causes, and effects of failures in the Jig Screen System's components, determine high-risk components through Risk Priority Number (RPN) calculations, and develop preventive maintenance recommendations. The method applied is Failure Mode and Effect Analysis (FMEA), with primary data obtained through field observation and technician interviews, and secondary data consisting of historical failure records from 2025. The results show 28 failure events occurred throughout 2025 with a total downtime of 100.5 hours. The FMEA analysis identified the Rotary Screen Segment as the highest-priority component with an RPN value of 378, followed by the Eccentric Bearing with an RPN of 210, while the Jig Eccentric, Rotary Screen Shaft Bearing, and Rotary Screen Grizzly fell into the medium-priority category. Based on these findings, preventive maintenance recommendations were developed, including periodic inspection, lubrication, cleaning, and component replacement before failure occurs, with time intervals tailored to each component. Implementation of these recommendations is expected to reduce failure frequency, decrease downtime, and improve the reliability of the Jig Screen System as well as the continuity of the tin production process.

RANCANG BANGUN LOKER PENGAMAN PENITIPAN OTOMATIS MENGGUNAKAN SISTEM SPECIAL CODE

Nafis Syaefullah, Shela Hermawan, Surojo Surojo, Valentin Vina Ratnapuri — Fri, 21 Aug 2026 00:00:00 +0700

Conventional storage lockers had security limitations because they relied on physical keys that could be lost, damaged, or misused. This study aimed to design and implement an automatic locker security system using a special code method for user authentication. The system was developed using an ESP32 integrated with a keypad, a 16×2 LCD, a magnetic reed switch, a relay, a solenoid door lock, a buzzer, LEDs, and the Blynk application for monitoring and access management. The research method consisted of system planning, hardware and software design, implementation, and functional testing of all system components. The testing results showed that the proposed system successfully performed access code verification, automatic locking and unlocking, password modification, forced-entry detection, and system recovery. Implementing the special code method improved locker security, simplified user operations, and enhanced the efficiency of storing and retrieving belongings compared with conventional locker systems.

RANCANG BANGUN FOOD TROLLEY PENGHANGAT MAKANAN OTOMATIS BERBASIS INTERNET of THINGS

Fri, 21 Aug 2026 00:00:00 +0700

Hospital food distribution requires a system capable of maintaining food temperatures to meet safety standards until the food reaches the patient. Temperature drops during distribution can compromise food quality; therefore, an automated heating system with real time monitoring capabilities is essential. This study aimed to design and construct an Internet of Things (IoT) based heated food trolley utilizing an ESP32 microcontroller, a DHT22 sensor, a PTC heater, an axial fan, and a Fuzzy Logic Controller (FLC) method. The monitoring system employs the Blynk application, enabling temperature and humidity tracking via smartphone. The research methodology encompassed requirements identification, mechanical and electronic design, software development, FLC implementation, system assembly, and performance testing. Test results demonstrated that the system successfully reached a setpoint temperature of 61°C and achieved stability within approximately 10 seconds. The DHT22 sensor exhibited an accuracy rate of 99.1-99.9% when compared to a reference measuring instrument. The FLC implementation effectively automated the PTC heater's operation to maintain the desired temperature range, while the Blynk application successfully displayed real-time temperature and humidity data. The findings indicate that the developed system is capable of maintaining food temperatures during distribution and offers superior monitoring convenience compared to systems relying solely on heating elements without IoTbased monitoring.

TRAINER KIT DC-DC CONVERTER UNTUK SISTEM PEMBANGKIT LISTRIK TENAGA SURYA (PLTS)

Bazzal Azkiya, Muhammad Alfatihatul Fadly, Eko Sulistyo, Laily Muharani — Fri, 21 Aug 2026 00:00:00 +0700

This study aims to design and implement a Photovoltaic (PV)-Based DC-DC Converter Trainer Kit as a learning medium for Buck, Boost, and Buck-Boost Converter systems. The research method consists of system design, implementation, testing, and performance analysis. The results show that the developed trainer kit operates according to the characteristics of each converter: the Buck Converter reduces the output voltage, the Boost Converter increases the output voltage, and the Buck-Boost Converter is capable of both increasing and decreasing the output voltage as required. Therefore, the trainer kit can be used as an effective practical learning medium to enhance students' understanding of DC-DC converter systems in photovoltaic (PV) applications.

ANALISIS AKAR PENYEBAB KEMACETAN ERETAN MEJA PADA MESIN GERINDA DATAR HR PSGS–4070AH MENGGUNAKAN METODE ROOT CAUSE FAILURE ANALYSIS (RCFA)

Sapto Anugrah, Hapiz Firdaus, Indra Feriadi, Tuparjono Tuparjono — Fri, 21 Aug 2026 00:00:00 +0700

Table slide jamming on the Reform HR PSGS-4070AH surface grinding machine can reduce machining quality, disrupt laboratory activities, and increase the risk of component failure. This study aimed to identify the root cause of table slide jamming using the Root Cause Failure Analysis (RCFA) method. Data were collected through observation, interviews, component inspection, and documentation, and subsequently analyzed using the Fishbone Diagram and 5 Why Analysis. The results revealed that the root cause was not the failure of the ball screw, but the absence of a consistent preventive maintenance program, resulting in an ineffective central lubrication system. The proposed corrective actions include restoring the lubrication system, replacing damaged components, and implementing a preventive maintenance program to improve machine reliability.

RANCANGAN MESIN PENCACAH JANJANGAN SAWIT UNTUK KEBUTUHAN PUPUK KOMPOS

Fri, 21 Aug 2026 00:00:00 +0700

Solid waste in the form of oil palm fruit bunches from the palm oil industry continues to increase and remains underutilized. The accumulation of this waste poses potential environmental problems. One effective management strategy is processing it into compost; however, the large size and hardness of the fruit bunches result in a very long decomposition time unless they are shredded first. The objective of this final project is to design an oil palm fruit bunch shredder to accelerate the decomposition process into compost. The design methodology employs the systematic VDI 2222 approach—covering the planning, conceptualization, design, and finalization stages—supported by simulations using SolidWorks software. The design results in specifications for a shredder featuring a mechanism to adjust the cutting gap between blades, thereby effectively meeting composting requirements.

RANCANG BANGUN SISTEM PENDETEKSI TANAH LONGSOR BERBASIS IOT

Fri, 21 Aug 2026 00:00:00 +0700

Indonesia is a country prone to landslides, especially in hilly areas with unstable soil conditions and high rainfall. Delays in detecting early signs of landslides can increase the risk of losses and endanger public safety. Therefore, an early warning system is needed that can provide information on land conditions quickly and accurately. This study aims to design and build an Internet of Things (IoT)-based landslide detection system using an ESP32 microcontroller that can detect changes in land conditions and provide early warnings in real time. The research method used is the system design and development method (engineering design), which includes the stages of problem identification, hardware and software design, tool construction, sensor testing and calibration, system implementation, and system performance testing. The system uses limit switch sensors, GY-291 ADXL345 sensors, HC-SR04 ultrasonic sensors, and Raindrop sensors to detect changes in slope conditions. Data from all sensors is processed by the ESP32 and sent to the monitoring system via Discord. In addition, the system is equipped with a siren and strobe lights as an immediate warning on the location when dangerous conditions are detected. Test results show that the system is capable of detecting safe, alert, and dangerous conditions, sending real-time notifications, and activating warning devices based on the detected conditions. Therefore, the developed system can help increase public awareness and reduce the risk of casualties from landslides.

TRAINER KIT PEMBELAJARAN RANGKAIAN LISTRIK PORTABLE

Naufal Zaki Irvawansyah, Dhimas Dwi Azhari, Eko Sulistyo, Peprizal Peprizal — Fri, 21 Aug 2026 00:00:00 +0700

Practicum is an important part of vocational learning to improve students' understanding of the concept of electrical circuits. However, the trainer kit used at the Electrical Engineering Laboratory of the Bangka Belitung State Manufacturing Polytechnic still has limitations, such as the use of external power supplies and multimeters as well as components that are difficult to replace when damaged so that the practicum process becomes less practical and efficient. This research aims to design and develop the Portable Electrical Circuit Learning Kit Trainer as a more practical and easy-to-use learning medium. The research method used is Research and Development (R&D) with a 4D development model which includes the Define, Design, Develop, and Disseminate stages. Data analysis was carried out descriptively based on the results of designing, manufacturing, and testing each practicum module. The results of the study showed that the trainer kit successfully integrated Ohm's Law, Kirchhoff's Law, series, parallel, combination, Superposition Theorem, Thevenin's Theorem, and Power Transfer modules in one portable device. Tests show the entire circuit and power supply system is working properly, although the LCD display feature has not worked optimally. Thus, the trainer kit developed is suitable for use as a learning medium for electrical circuit practicum because it is able to improve the practicality and efficiency of practicum implementation, and still has the potential to be perfected in future development.

RANCANG BANGUN MESIN ROASTING BIJI KOPI KAPASITAS 3 KILOGRAM

Fri, 21 Aug 2026 00:00:00 +0700

Roasting is a crucial stage in coffee bean processing, as it influences the beans' color, aroma, and degree of roast. Manual roasting methods often suffer from limited production capacity and inconsistent results. This final project aimed to design and construct a 3-kilogram capacity coffee bean roasting machine tailored to the needs of Micro, Small, and Medium Enterprises (MSMEs). The design process utilized the VDI 2222 methodology encompassing planning, conceptualization, detailed design, and product finalization supported by data collection through surveys and literature reviews. The design features a 0.5 HP AC electric motor with a pulley and V-belt transmission system, driving a roasting drum at 45 RPM with a 3kilogram capacity. Testing at temperatures of 130°C, 170°C, and 200°C, with roasting times of 50, 65, and 70 minutes, yielded light, medium, and dark roast levels, respectively. The resulting machine operates according to the design objectives and successfully produces varying roast levels based on temperature and time adjustments.

PROTOTYPE MESIN PEMOTONG RING CUP GELAS PLASTIK UNTUK MENINGKATKAN EFEKTIVITAS DAUR ULANG LIMBAH PLASTIK

M. Dzaki Akbar Akbar, Ramanda Aditya, Robert Napitupulu, Amril Reza — Fri, 21 Aug 2026 00:00:00 +0700

The vertical polypropylene (PP) plastic cup ring cutting machine prototype was successfully designed, fabricated, and assembled. Functional testing confirmed that key components (including the 1.5 HP AC motor, pulley and V-belt transmission, shaft, bearings, and cutting blade) operated effectively to separate plastic cup rings from cup bodies. Performance evaluation using 416 plastic cups (1,040 g total mass) achieved an 80.05% cutting success rate. Processing required 83 cutting cycles over 1,245 seconds (20 minutes, 45 seconds), which was approximately 5 minutes slower than manual cutting (15 minutes for equivalent material). While the study successfully achieved its first objective of designing and fabricating the prototype, it fell short of the initial target capacity to process 1 kg of cups in 10 minutes. This gap was primarily driven by the cutting shaft speed of ~1,425 rpm, which proved mismatched with the blade characteristics and PP material properties; a reduced speed of 600–900 rpm is recommended for optimal performance. Nevertheless, the second objective was fully met by establishing the prototype's actual capacity and demonstrating effective separation of cup rings from their bodies.

RANCANGAN MESIN PEMBUAT TEPUNG CANGKANG KERANG UNTUK BAHAN TAMBAH PAKAN TERNAK

Fri, 21 Aug 2026 00:00:00 +0700

Clams are a type of mollusk that have a hard shell and a soft body, living in both seawater and freshwater, and they serve as a source of food for humans as well as animals. Besides the clam meat being used as a food source, it turns out that clam shells can also be used as feed supplements for livestock because they contain calcium, which can help bone growth and egg production in poultry. The purpose of this research is to design a machine to make clam shell powder effectively to help local farmers meet the needs for additional livestock feed. The design method refers to the VDI 2222 systematic approach, through the stages of data collection, conceptualization, design, and completed. A design was created for a shell flour making machine as a feed additive for livestock, with machine specifications using a 6.5 hp combustion engine and a V-belt transmission system, with a maximum capacity of 1 kg per process. Based on the results of component configuration simulations and assembly part simulations in SolidWorks software, or performance validation of the system to ensure function suitability before the prototype stage.

RANCANG BANGUN MESIN PENCACAH SAMPAH KEMASAN GELAS CUP MINUMAN PORTABLE

Fri, 21 Aug 2026 00:00:00 +0700

The increasing consumption of PET plastic cup beverage packaging has led to an increase in the volume of plastic waste that requires more effective handling. One solution that can be implemented is the shredding process as an initial stage before recycling. This study aims to design a portable cup beverage packaging waste shredding machine with a dual-stage system that is capable of producing more uniform shredded sizes. The research methods include identifying needs, developing alternative concepts, selecting concepts using the weighting method, designing using SolidWorks, calculating machine elements, and simulating static loading. The machine uses a 2 HP AC electric motor with a two-stage shredding system consisting of a single shaft crusher and a reel cutter. The transmission system uses a clutch, pulley, and V-belt with a transmission ratio of 2.77, resulting in a crusher shaft rotation of 506 rpm. The design results show a theoretical production capacity of 5 kg/hour. The frame structure simulation produces a maximum stress of 12.68 MPa and a maximum deformation of 0.027 mm, which is still below the yield stress of AISI 1020 material so that the design is declared safe. Based on the results of the technical and economic evaluation, the third design alternative was selected as the best design.

SISTEM PROTEKSI DAN MONITORING UNSTABLE VOLTAGE PADA INSTALASI LISTRIK RUMAH TANGGA BERBASIS INTERNET OF THINGS

Inosensius Theo Aristo, Muhammad Fadly, Peprizal Peprizal, Titin Indriati — Fri, 21 Aug 2026 00:00:00 +0700

Unstable voltage in residential electrical installations can cause damage to electrical appliances and reduce the reliability of electrical systems. This study aims to design and implement an Internet of Things (IoT)-based unstable voltage protection and monitoring system using an ESP32 DevKit V1, three PZEM-004T sensors, a 4-channel relay module, a 16×2 I2C LCD, and the Blynk application. The study employed the Research and Development (R&D) method, which consisted of system design, hardware and software implementation, and system performance testing. The evaluation included sensor accuracy, overvoltage and undervoltage protection, selective protection, IoT-based monitoring, and system response time. The test results showed that the PZEM-004T sensors achieved voltage measurement errors ranging from 0.23% to 1.20% and frequency measurement errors ranging from 0.02% to 0.20%. The proposed system successfully detected abnormal voltage conditions, selectively disconnected only the affected load circuit, and maintained power supply to the remaining normal load circuits. The system response time ranged from 841 ms to 870 ms, while the affected load was automatically reconnected after the voltage had remained within the normal operating range for 15 seconds. In addition, the Blynk application successfully displayed electrical parameters and delivered real-time notifications of abnormal voltage conditions. The results demonstrate that the proposed system enhances the reliability of residential electrical protection by integrating real-time monitoring with IoT-based selective protection.

TRAINER KIT RANGKAIAN ELEKTRONIKA SEBAGAI MEDIA PEMBELAJARAN

Fiby Kania, Riyan Oktoviansyah, Ocsirendi Ocsirendi, Dewi Tumatul Ainin — Fri, 21 Aug 2026 00:00:00 +0700

Electronics practicum is often constrained by separate components, requiring a long assembly time. This study aims to design an electronics circuit trainer kit as an efficient and interactive learning medium at Polman Babel. The method used is the design of an integrated system based on Arduino Uno equipped with ACS712 sensors, INA219 sensors, and an LCD screen. This trainer includes diode rectifier modules and Op-Amp signal conditioning modules. The functionality test results show that all modules successfully function properly. The main advantage of this device lies in the automatic multimeter feature which can display voltage, current, and resistance values directly on the LCD. In conclusion, this trainer kit is effective and practical for learning media to enhance students' understanding of electronics concepts.

MODIFIKASI MESIN SEALER PUPUK PRODI D4 PERTANIAN PRESISI POLMAN BABEL

Masdani Masdani, Apriza Apriza, Dikki Ardiansyah, M. Rio Gebrian, Amril Reza — Fri, 21 Aug 2026 00:00:00 +0700

The fertilizer packaging process is one of the important stages that affects the quality and safety of the product. The sealing machine used in the Precision Agriculture D4 Study Program still has several limitations, such as the machine being in a horizontal position, limited conveyor capacity, no height adjustment mechanism for the machine, and the absence of a system to guide bags to the sealing area. These conditions make the packaging process less optimal and require manual adjustments by the operator. Therefore, the sealer machine design was modified to improve effectiveness and ease in the fertilizer packaging process. The methods used in this study include identifying needs, literature review, concept design, 3D modeling using SolidWorks software, and evaluation of the resulting design. The modifications made include changing the machine position from horizontal to vertical, increasing the conveyor capacity from 3 kg to 10 kg, adding a mechanism to adjust the machine's height so it can match the size of the sacks, and adding guiding components at the end of the sacks to make it easier for them to enter the sealing area.

PERANCANGAN MESIN PENCETAK LAKSA SISTEM PRESSING SCREW MENGGUNAKAN METODE DESAIN REKAYASA BERBANTUAN SOLIDWORKS

Fri, 21 Aug 2026 00:00:00 +0700

Laksa survey results indicate that the printing process within Small and Medium Enterprises (SMEs) is still largely performed manually using traditional levers. This conventional method requires significant time and physical labor while producing fewer uniform strands. This study is the initial part of a comprehensive design and construction project for a 1 kg/3 minutes capacity laksa printing machine. Based on the operating parameters, the screw shaft is designed to rotate at a constant low speed of 120 RPM driven by a 0.5 HP electric motor. The structural framework implements an 8-stage Engineering Design Process (EDP). Concept evaluation was conducted via a quantitative weighting matrix based on technical and economic criteria. The evaluation results selected Alternative Concept 1 (Ak 1) as the optimal design with the highest score of 4.30. The selected concept integrates a hollow steel structure frame, a pulley and V-belt transmission system, a fixed hopper, and a continuous variable pitch screw press mechanism. The output of this research yields a blueprint capable of extruding laksa strands with a diameter of Ø3 mm and projecting a total production capacity of up to 20 kg per hour.

PENERAPAN METODE FMEA PADA PERAWATAN SISTEM HIDROLIK KAPAL ISAP PRODUKSI TIMAH

Ferdi Ferdi, Fajar Aswin, Muhammad Riva'i — Fri, 21 Aug 2026 00:00:00 +0700

The hydraulic system is a critical component of the Tin Production Suction Dredge (KIP), responsible for powering various operational equipment. Failures in this system can disrupt production, increase downtime, and raise maintenance costs. This study aims to identify the types of failures in the hydraulic system of KIP Timah 07, analyze their causes and impacts using the Failure Mode and Effect Analysis (FMEA) method, and establish maintenance priorities based on Risk Priority Number (RPN) values. A descriptive-quantitative research method was employed, with data collected through observation, interviews, and documentation of failure records from 2025. The analysis involved identifying failure modes, determining Severity (S), Occurrence (O), and Detection (D) ratings, and calculating the RPN for each failure mode. The results indicate 29 failure incidents totaling 320.5 hours of downtime. The component most frequently experiencing failure was the Staffa cutter hose, followed by the cutter hydraulic pump, cutter hydraulic flange, and hose nipples. Primary causes of failure included component wear, high operating pressure, connection leaks, and suboptimal inspections. Applying the FMEA method enabled the identification of risk priorities, serving as a basis for developing a more effective preventive maintenance program. Implementing the maintenance recommendations is expected to enhance hydraulic system reliability, reduce failure frequency, minimize downtime, and improve the operational efficiency of the Tin Production Suction Dredge.

PENERAPAN CORRECTIVE MAINTENANCE PADA MESIN PRESS KELAPA SAWIT DI PT GSBL DENGAN METODE 5 WHY

Steven Leonardo, Yudi Yudi, Robert Napitupulu, Angga Sateria — Fri, 21 Aug 2026 00:00:00 +0700

The screw press machine is a main piece of equipment in the palm oil processing process, functioning to extract oil from palm fruit. Machine damage can reduce productivity, increase downtime, and disrupt the production process. This final project aims to identify damage to the screw press machine at PT. Gunung Sawit Bina Lestari, analyze the causes of damage using the 5 Why method, and implement corrective maintenance as a repair action. The method used is descriptive with a case study approach. Data were obtained through observation, interviews, documentation, and literature study. The results showed that the main damage occurred to the screw press, bushing hollow lengthening, and hydraulic motor rubber coupling. The 5 Why analysis showed that screw press damage was caused by excessive workload and the component's service life approaching the hour meter limit, bushing damage was caused by insufficient lubrication and the absence of scheduled maintenance, while rubber coupling damage was caused by hydraulic pressure exceeding the standard. Corrective maintenance was carried out through disassembly, inspection, cleaning, lubrication, replacement of damaged components, and machine testing. The repair results showed that the machine returned to stable operation, vibration was reduced, the hydraulic system functioned normally, and the pressing process operated properl.

RANCANG BANGUN ALAT PENGECEKAN KONTAK TIMER DAN KONTAK KONTAKTOR BERBASIS MIKROKONTROLER

Radha Auralia Vanisa, Rai Zaki Amriza, Ocsirendi Ocsirendi, Parulian Silalahi — Fri, 21 Aug 2026 00:00:00 +0700

This research aims to design and build a microcontroller-based testing tool for timer and contactor contacts, specifically to detect NO and NC contact conditions and to verify ON-delay and OFF-delay timer functions more easily, quickly, and accurately than manual methods. The developed device utilizes a microcontroller and components such as relay modules, push-buttons, and LEDs to automatically test NO and NC contact states and monitor timer functions. The system operates by applying a test signal to the contacts under inspection, reading changes in load current and voltage, and displaying test results in real-time. Research results demonstrate that the device effectively detects contact conditions, displays status information instantly, and measures time delays with millisecond precision. Furthermore, the device identifies faulty or unstable contacts, thereby facilitating the analysis of component conditions. Based on testing outcomes, the tool is considered more practical, rapid, and efficient than manual testing using a multimeter. Thus, the designed microcontroller-based testing tool successfully meets the research objectives and holds potential for use as an aid in laboratory practice, education, and electrical equipment maintenance.

IMPLEMENTASI COIN ACCEPTOR SEBAGAI SISTEM PEMBAYARAN PADA PROTOTYPE RAK PENGERING SEPATU BERBASIS MIKROKONTROLER

Wansah Aditya, Yudis Setiawan, Ade Putra Maulana, Daya Wulandari — Fri, 21 Aug 2026 00:00:00 +0700

Conventional shoe drying methods still rely on weather conditions, making them less effective especially during the rainy season or in environments with high humidity. Additionally, the use of commercial shoe dryers requires a payment system that is practical and easy to operate. This literature review aims to analyze the implementation of a coin acceptor as a payment system in a microcontroller-based shoe dryer rack prototype. The method used is a narrative literature review, involving the collection and analysis of various scientific articles, journals, and conference proceedings published between 2021 and 2025 via Google Scholar. The analysis was conducted descriptively by examining the operating principles of coin acceptors, microcontroller based shoe dryer technology, and the potential for integrating these two systems. The results indicate that coin acceptors have a high level of accuracy in detecting coins and can be integrated with microcontrollers to automatically regulate service duration. Meanwhile, a microcontroller-based shoe-drying system that utilizes a heater, fan, and temperature-humidity sensors has proven capable of improving the effectiveness of the drying process. The integration of these two technologies has the potential to produce a self-service shoe drying system that is practical, efficient, and easy to use. Thus, a coin acceptor could serve as an alternative payment system that supports the development of microcontroller based shoe drying racks.

RANCAN BANGUN SISTEM ALAT PEMANTAUAN SUHU DAN KELEMBAPAN PADA PENETAS TELUR BURUNG PUYUH MENGGUNAKAN ARDUINO UNO

Joan Syawitri, Athallah Sahwahita, Yudhi Yudhi, Pristiani Pristiani — Fri, 21 Aug 2026 00:00:00 +0700

Quail are a type of poultry with high economic value and growing market demand. In quail farming, the egg breeding and hatching process is a crucial stage, where stable temperature and humidity significantly influence hatching success rates. Natural hatching methods using broodstock often result in low success rates (around 41.67% - 63.89%) due to environmentally unstable conditions. Therefore, this final project aims to design and build a system for monitoring and controlling temperature and humidity in a quail egg incubator automatically and in real time.This system is designed using an Arduino Uno microcontroller as the main control center. DHT11 and DHT22 sensors are used to digitally measure temperature and humidity data inside the incubator.Through the implementation of this IoT-based automated system, environmental conditions inside the incubator can be maintained consistently and stably. This is expected to minimize the risk of embryo mortality due to temperature fluctuations, facilitate farmer monitoring, and significantly increase the efficiency and success rate of quail egg hatching.

ALAT PENGERING OTOMATIS BERBASIS INTERNET OF THINGS (IOT)

Sindy Putri Anisyah, Muhamad Rizky Radiansyah, Misri Yandi, Yudhi Yudhi — Fri, 21 Aug 2026 00:00:00 +0700

This research aims to design and develop an Internet of Things (IoT)-based automatic multiproduct drying system capable of drying chili, salted fish, and kemplang in a single integrated device. The system employs an ESP32 microcontroller as the main controller, a DHT22 sensor for temperature and humidity monitoring, a heating element as the heat source, and blower and exhaust fans for air circulation. Measurement data are transmitted to an IoT platform, enabling users to monitor the drying process in real time through a smartphone. Experimental testing was conducted on three different products with specific temperature settings according to their drying requirements. The results indicate that the system can maintain the drying chamber temperature with an average deviation of ±2°C from the desired setpoint. Furthermore, the drying process was accelerated by approximately 30–40% compared to conventional sun-drying methods. The implementation of IoT technology improves monitoring efficiency, maintains product quality, and reduces dependence on weather conditions. Therefore, the proposed system has significant potential for application in small and medium-scale agricultural and fishery enterprises.

PENERAPAN PREDICTIVE MAINTENANCE UNTUK MENDETEKSI CACAT RODA GIGI LEBIH DINI

Terkisah Alif Rizky, Wahyu Dirgantara, Ariyanto Ariyanto, Ramli Ramli — Fri, 21 Aug 2026 00:00:00 +0700

Gear transmission systems are critical components in industrial machinery that are susceptible to degradation due to continuous operational loads. Early detection of gear damage is essential to prevent catastrophic failure and minimize production downtime. This study aims to implement a predictive maintenance system based on vibration analysis and machine learning to detect and classify the conditions of spur gears and helical gears. The damage scenarios tested include wear, normal operating conditions, and structural damage such as chipping or fractures. Vibration data were acquired using a triaxial accelerometer on a gearbox test rig.