esp32 pwm Q&A Forum › esp32 pwm 0 Vote Up Vote Down Joel Jacob asked 2 years ago Can we change brightness of bulb using this technique? 3 Answers 0 Vote Up Vote Down Rui Santos Staff answered 2 years ago Hello, yes. PWM is used to change the brightness or speed of a motor (for example). Are you talking about controlling the brightness of an AC lamp? 0 Vote Up Vote Down Joel Jacob answered 2 years ago yes 0 Vote Up Vote Down Rui Santos Staff answered 2 years ago I’ve never used this module before (I’ve ordered mine 3 weeks ago), but II think it does exactly what you’re looking for: http://s.click.aliexpress.com/e/n6PClGU This module should allow you to control an AC light with PWM.