Can we have "too many" steps in the CFZ?
Version 2 of the myFocuser Project
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I am waiting for bigger stepper motors to come in but in the meantime I want
to get out and try my new focuser. It's all completed and mounted on my ED80
but it's a rack and pinion with 8:1 ball reducer which needs a lot of torque
to turn the 1:1 shaft. I need to drive the 8:1 for the 28BYJ to work
(modified for bipolar and driving with 24V) and that gives me about 70 steps
in the CFZ. Will that still work or is it too many?
Thank you.
Last edit: PaulW 2024-11-07
70 steps in CFZ is way too high and you will struggle using auto focus runs in NINA
As pointed out in the focuser basics PDF (required reading) it has to be around 10.
I dont think the 28byj is up to it for an ED80. I have tried it. I ended up with this: On the CF ED80 F6, I had I was using a PG5 NEMA planetary geared motor set to 1/2 steps giving me 9 steps in CFZ.
Regards