Quote:
Originally Posted by Sunfish
... Is there focuser control under Onstep that could manage a stepper motor for focus?
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Because OnStep uses Arduino stepper drivers (STEP/DIR) for 4-wire steppers, and this motor has 5 wires (two coils with joined middle contacts) so you have to modify it first, by opening the blue plastic cover and add middle wire for another coil (after cutting the connection between coils)).
Then you can use only 4 wires (1/2 coil, Red-Blue and Black-Orange wires for 5V, the whole coils for 12V) to connect the motor to driver.
See details
here and
here.