Siti Afifah binti Mohshim and Nurhanis binti Aziz, “Human Heart Prototype by Using Node MCU for Education”, JET, vol. 9, no. 1, pp. 1–6, Nov. 2021, Accessed: Jun. 17, 2026. [Online]. Available: https://ejournal.unikl.edu.my/index.php/jet/article/view/288