The Arduino Mega's PWM pins are digital output ... This variable output is achieved with the use of a square wave, which dictates how long the digital signal stays in the on and off states.

A PWM-controlled regulator, this time using a logic gate IC, op-amp, and resistors and capacitors to buffer the PWM signal.

I also fed a 1kHz (50%) 5V PWM signal to the PWM-GND input points ... While on the topic, if you know what’s going on, you can also use the following crude Arduino code or better code fragments to ...

If your Arduino runs out ... how to add up to 992 PWM outputs. The chip he uses works with any microcontroller (the video shows an ESP8266), and we suppose you could use two daisy chains of ...