At its core, pulse width modulation (PWM) is just another modulation technique like AM or FM, among others.

Many electronics hobbyists who build robots and other moving things recognize the term as it pertains to controlling the speed of a motor.

But PWM has a lot of other, lesser known uses also.

Let’s first start with some PWM fundamentals.

What is Pulse Width Modulation (PWM)?

Pulse width modulation