Control of light Intensity via Microcontroller for the Efficiency of Electrical EnergySriwati, Tzal Aedi Al Abshari, Ansar Suyuti, Andani Ahmad and A. Ejah Umraeni SalamMATEC Web Conf., 331 (2020) 06006DOI: https://doi.org/10.1051/matecconf/202033106006