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Electric Clocks

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Rick Kempf
Rick Kempf

desktop clock SP6 motor rpm

I have the programmed driver from 'etsy and a completed 'sp6. I have a Stepperonline 17ME15-1504s stepper a 2 amp eer phase 0.9 motor 200 step.


None of the jumper setting give me a correct RPM

Your 11 May 2023 document say use 0011jumper for 3.6 RPm. this is way too slow.

The closest I can come is setting 5 06 6 which give 6.944 rmp. My clock needs a bit over 7 rpm to time correctly...

The motor cable is the same RedBlueGreenBlack at both ends.

I have plugged it into the connector nearest the edge of the board with the red lead closest to the USB.

It is turning a bit over 7 RMP.

??? what to do?



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Rick Kempf
Rick Kempf
Jun 09, 2024

Installed the 400 step motor...accurate to the second over night...happy clock builder.

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