Development of an improved money box with counter and fingerprint lock using microcontroller

Amil, Ros Amiza (2025) Development of an improved money box with counter and fingerprint lock using microcontroller. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The development of an improved money box with a counter and fingerprint lock using a microcontroller addresses the limitations of traditional savings methods. Conventional money boxes lack advanced features such as money detection, automatic counting, and robust security measures, often resulting in inefficiency, inaccuracy, and vulnerability to theft. This project aims to overcome these challenges by integrating a TCS3200 color sensor for banknote detection, an automatic counter for real-time tracking of savings, and an AS608 fingerprint scanner for secure access. At the core of the system is the Arduino Uno R3 microcontroller, which coordinates the operation of these components along with a solenoid lock to ensure seamless functionality. The project methodology included designing both hardware and software systems and conducting extensive testing to ensure precision and reliability. Results revealed that the system accurately detected and counted RM1, RM5, and RM10 notes but encountered difficulties with RM20, RM50, and RM100 due to sensor calibration limitations. Fingerprint authentication demonstrated high reliability, with successful detections in most cases. To enhance the system, future improvements include refining sensor calibration to support a wider range of banknotes, improving the user interface for better usability, and integrating IoT capabilities for real-time tracking and remote management. This project demonstrates how microcontroller-based systems can modernize personal savings by providing a secure, efficient, and user-friendly solution, encouraging better financial management habits.

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