ALAT PENGHITUNG JUMLAH NOMINAL UANG KERTAS DENGAN OUTPUT SUARA UNTUK LANSIA BERBASIS ARDUINO
Keywords:
Arduino Uno, DFPlayer Mini, Elderly, Voice Output, TCS230 Sensor, BanknotesAbstract
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.
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Copyright (c) 2026 Soraya Rahma Azalia, Doni Saputra Setiyo Riski, Ocsirendi Ocsirendi, Yus Dwi Yanti
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