autonm wrote: Great thread ... I have found the Waveshare Stepper Motor HAT to buy (in the UK) - but how do I decide which stepper motor is appropriate? Is there any calculations or is a stepper motor a stepper motor ?

Appreciate any model / parts numbers to look up for the motor side.

Also How are people attaching the motor to the scope / focus knob itself ?

Many thanks

This would be good point of reference regarding the stepper motor choice, etc: