R. C. C. L. Ho, M. Zulkipli, and M. F. . Shaari, “Design of a Low Cost Coin Acceptor for Vending Machine”, peat, vol. 2, no. 1, pp. 743–752, Jun. 2021, Accessed: May 06, 2024. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/839