Simulasi Pengendalian Kecepatan Putar Ceiling Fan Berbasis Arduino

Simulation of round speed controlling to ceiling fan based on arduino microcontroller system as processor centre, and use two fototransistors as sensor, also some electronic components. Light sensors is used fototransistors that work based on different resistance value between light reflected and not reflected. When fototransistor did not get light will be send low level logics to microcontroller and will be processed as program. Then activised each ports of microcontroller and doing one by one simultaneously related how many people in that room automatically.