Shamsuddin, Nuratiqah, and Muhammad Mahadi Abdul Jamil. “Smart Blind Stick”. Evolution in Electrical and Electronic Engineering 2, no. 2 (November 14, 2021): 182–190. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/3629.