Mohd Rasyidi, Nasrin Hannani, and Rosnah Mohd Zin. “Cat’s Monitoring and Feeding Systems via Internet of Things (IoT)”. Evolution in Electrical and Electronic Engineering, vol. 2, no. 2, Nov. 2021, pp. 93-101, https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/3871.