M. A. Halim and H. Hassan, “Foot Step Piezoelectric Sensor Power Generation Project”, peat, vol. 4, no. 2, pp. 297–305, Dec. 2023, Accessed: Jul. 18, 2024. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/13142