Need Micro-Servo Rec's

Other Hardware Motors, Mechanics, Power and CNC
1

I am trying to create a information display using servos and it is VERY important that they are calibrated to the same degree (e.g. if 90-degrees rotation in one servo is the same as 90-degree rotation in the other). I have been using the sg90 and sg92R servos from tower pro and they are not the same, often off by at least 15 degrees. I have changed the wiring to make sure it was a servo issue and not an issue with code - nope: it is the servos. I understand that these hobby servo's are not known for their...quality...so any suggestion on what to use would be greatly appreciated!

Reqirements:
3v-5v
does not need to move anything heavy (basically a piece of paper)
does not need to be fast
just needs to be accurate

THANKS!!

2

Hi,

I don't know if "more expensive" servos will have more absolute accuracy.

Most critical applications have some adjustments in code. If you have two variables for each servo, one an adder and the other a multiplier you should be able to get very close.

If you are making the "dial divisions" you can calibrate it there. That's what I do when making temperature dials. I make a sketch that outputs steps of temperature and then mark the dial.