Published: 17 Oct 2018 › Updated: 17 Oct 2018
Pulse Width Modulation (PWM) via Software
Pulse-width modulation is a technique that allows a microcontroller to control the speed of motors, brightness of LEDs, or average voltage without needing a DAC. If you don't have a microcontroller with on-board PWM hardware, or have run out of PWM channels, how can PWM be simulated using software?
The flow diagram
The C code
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