SparkFun Servo Shield / Servo Speed for Telescope Pan/Tilt Project

Kits
1

I have the pan / tilt and Raspberry Pi Camera working perfectly as designed.

I’m familiar with programming but PWM controlled hardware is new to me.

I’m trying to figure out how to slow down the Servos. They’re 1.) too abrupt in speed and 2.) they can not move in any kind of finely controlled fashion. e.g. I can only move a few degrees at a time.

I’m using the SG90 Servos. Is this a limitation of the servo? An I better off with steppers? I’ve tinkered with the settings in pan tilt.py. Also used the 50hz and tuned versions but was unable to slow down. Any help would be greatly appreciated.

2

While far from ideal, you could add delays between degrees of movement. Or you can increase the load on the servo movement. Unfortunately, servos just measure the movement, or degrees, that have elapsed, not the time spent doing it. I’m not familiar with any other way to circumvent that. You could try brushing up more on servos with SparkFun’s Servo Education Page: https://www.sparkfun.com/servos