PWM Testing Equipment

[Ether]

Originally Posted by Jim Wilks

1) can accept any PWM signal and display what it is receiving
2) generate a PWM signal based on some "hand control" input

Does anyone have any idea if such a thing exists and if so, where to get it?

If you have an old junker laptop (or desktop PC), you can do both.

#1 You can use a free program like Audacity as a simple oscilloscope. Connect the PWM signal to the "line in" input of the sound card. Use a simple resistor voltage divider to reduce the signal voltage to 1 volt.

#2 Read this paper. It shows how to generate PWM signals with an old computer.