Hi guys,
Okay. If you have an Arduino available you can use the “pulseIn” function to check the pulse width that’s being output and make sure it is correct. Here’s an example: https://www.arduino.cc/en/Reference/PulseIn
I looked at your code and the Adafruit library. The 0.9 correction is actually for the frequency, not the input signal. You might try pwm.setFreq(int(60*0.9)) instead and see if that helps.
If that doesn’t work, I have the same board sitting at the office and I can try your code our tomorrow with an oscilloscope.
I’m sure we can get this working!
Best,
Rusty