[Runtimemicro] has the answer, at least if you are writing PWM code for the Arduino ... the tool works for timers 1 through 5 on an Arduino Nano, Uno, or Mega2560. The app appears to work on ...

[Rafael] just made a little library that allows you to interface these modules to the Atmega328p-based Arduino UNO in order to gain some memory space. His work was actually based on the great ...