Financial management skills can be instilled from an early age through saving activities. TKIT Al-Hadits has implemented a mandatory saving program as part of early financial education. However, student participation has declined over the past two years. This study aims to develop an automatic saving machine based on RFID, TCS3200 color sensor, and a multi coin acceptor, equipped with gamification elements such as nominal display, balance, ranking, and level to increase students' motivation to save. Unlike previous studies, this system not only detects banknotes but also coins. The coverage of banknotes was expanded to include two emission years: 2016 and 2022. The system was also designed to support multiple users (multi-user). Testing was conducted using 10 RFID cards (5 registered and 5 unregistered), with a 100% success rate in identification. The TCS3200 sensor was tested with seven banknote denominations: Rp1,000, Rp2,000, Rp5,000, Rp10,000, Rp20,000, Rp50,000, and Rp100,000, each tested 50 times. The accuracy of reading 2016 emission banknotes ranged from 94% to 100%, while 2022 emission accuracy ranged from 92% to 100%. The multi coin acceptor accurately detected Rp100, Rp200, Rp500, and Rp1,000 coins with 100% accuracy across 50 trials each. Students' enthusiasm for using the saving machine was categorized as very high, with attention and willingness indicators reaching 100%, response at 99%, concentration at 98%, and engagement at 92%. This research is expected to introduce the habit of saving from an early age in a more enjoyable way, while also promoting a shift from a manual to an automated system.
Keywords: Automatic Saving, TCS3200 Sensor, Multi Coin Acceptor, RFID, Gamification, Enthusiasm