Use pulse output to control stepper motor, camera gimbal

[cambull (Stewart Campbell)]

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Using Stepper Motors as RC Position Servos or Continuous Rotation Servos

I recently 3D printed a bracket to attach the antenna boom from my GSE to a NEMA 42 stepper motor. That is 5kg worth of motor in the vice! The antenna boom was clamped to the mount and dropped onto the 3/4" (keyed!) motor shaft. Drive was accomplished with a 24v PSU (15A max) and a TIC 36v4 drive board. This was controlled through a RC tranmitter and receiver. So this will be the azimuth drive for the Automatic Antenna Tracker. Works well I think. [Stepper Motor Azimuth Drive Test…

The stepper drive boards do a fantastic job of interfacing to the regular PWM outputs. There are a number of different interface boards with different capabilities. Choose the one most suitable for your application.