Taj, A.B., and M. Ahmad. “Design and Implementation of Line Follower Robot Based on Single Pole Double Through Relay by Using Microcontroller”. The Nucleus 59, no. 2 (October 27, 2022): 61–67. Accessed May 19, 2024. http://thenucleuspak.org.pk/index.php/Nucleus/article/view/1253.