ORIGINAL: Edgar Perez
Thanks for the feedback so far.
In general I have been using the default (18ms) with no problem. However I have a new setup where the servo is moving agressively back and forth. If I touch the surface, it will stop. This is frecuent, but not all th etime. I'm wondering if the refresh rate may be a factor here.
When using the slower refresh rate, the 1ms gap (21-20) means the servo is ''needing'' and update and not getting it... ?
When using the faster refresh rate, the 2ms (20-18) means the servo may not yet ''done'' with the previous move and now getting the new position too early.. ?
So early (18) is always better than late (21)?
Thanks!
If you are getting an occasional slight buzzing from the servo this is normal and I wouldn't worry about it. If you can actually see the control surface moving, that's a problem. Verify that your linkage is slop free as sloppy linkage can also cause this behavior. If all your linkages are tight and operate smoothly but you can see a control surface jittering, I'd remove the servo and send it back for repair or replacement. Also, you didn't mention what voltage you are operating at. Hitec has a service bulletin for this type of behavior on their 7900 series servos when operated with unregulated Lipos...