But what exactly are these PWM pins, and how do you use them? Read more: Major Motherboard Brands Ranked Worst To Best The Arduino Mega's PWM pins are digital output pins located on D2 to D13 and ...

Enter the ExtraCore library for Arduino, a software library that turns two or more Arduinos into a multi-core microcontroller with more pins than you’ll ever need. The ExtraCore library comes ...

[Runtimemicro] has the answer, at least if you are writing PWM code for the Arduino. Their free application lets you set a few parameters, visually see the results, and then generates code for you.