Novelan, M. S., and A. A. Nababan. “Designing Energy Saving Home Lights Using Microcontroller Based Solar Panels: Designing Energy Saving Home Lights Using Microcontroller Based Solar Panels”. Jurnal Mantik, vol. 3, no. 4, Feb. 2020, pp. 642-8, https://iocscience.org/ejournal/index.php/mantik/article/view/658.