ewaller wrote:Do you have a scope to see if the control output is jittering?
If you dampen the servo output with a finger, do they settle down?
Is you program continually writing to the port, or does it only write when a change needs to be made?
Nope. Pushing them to relieve stress stops the buzzing, but it is a very tiny window. Writes once, because that is the drivers job.
I made a short video demonstrating the buzz. https://youtu.be/Jplor6R2NJ4 https://youtu.be/s9QCqEh3y4Q
Hopefully that clarifies things a bit better. Note: The most bottom servo is 'crunchy' and you'll hear it. I received a defective servo and have a replacement in the mail. It works normally but just sounds awful. The additional bits are a current sensor hooked up to a digispark Attiny85, that blinks its LED when the servo is "under stress." The DC convertor board only takes the digisparks 5v output down 1.5v so its Pi safe.