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Joshua helped to customise a autofocus solution for my Pentax 125SDP. For folks who are familiar with the Pentax 125SDP, it has a huge helical focuser with a rubberised grip that can handle a decent camera payload.
I opted for a ZWO EAF as the rest of my camera/filterwheel kit is also ZWO. Joshua designed and custom made a large sprocket on the OTA side with an ingenious tensioning ring system that doesn't scratch the OTA's helical focuser, a mounting bracket for the EAF, 3D printed sprocket for the motor shaft, and a belt with matching pitch to the motor and OTA sprocket.
Per attachment, my AF was spot-on right out of the box.
Thanks Joshua for the work! Very happy with this custom solution!
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