Let's Make Robots!

servo jitter

What causes servo "jitter" and how can I cure it?

Edit    Sorry, should have read this first.

http://letsmakerobots.com/node/3541

Not sure I'll be able to implement fritsl's solution, though.

 

I have a humanoid robot, which has 16 original servos, plus I have added 2 standard servos in claws, and recently 2 more micro servos for the head.

These 2 micro servos occasionally get a bad case of the "jitters", not all the time, but intermittently.

The meanest of servo jitter!

Working on a project, where I want a servo to rotate/position a laser that is reflected to a mirror, that is vibrated by magnetic pulses.. every day stuff here on LMR :)

Earlier I posted this:

IMG_6020.JPGIMG_6019.JPG

- And now it was time to hook it up.

However strange things happened. When I was pulsing the mirror, the servo was moving!