Steppers not responding Jackpot 3

My steppers don’t respond but just hum. I did a fresh install on the firmware and uploaded the preferences for the mpcnc. Humming stopped by i still can’t get anything to respond.

I’ve been building this as a side project on and off for a couple years and just now got the control board and wired the steppers just to test out if it works, and nothing.

Maybe the programming is a little over my head but I just can’t figure out what I’m doing wrong

Welcome @Ikguarino

Did you buy your steppers from the V1 store? If not, what brand and model are they. A like to them would be helpful too. The wiring order for some steppers don’t match the order for the drivers on the Jackpot. I ran into this a couple of times with motors I bought off of Amazon. Once I figured out the correct order everything worked.

These are Stepperonline motors. The order for these is blue, black, red, and green. Yours might match or be totally different, but we’ll figure it out eventually.

Here’s the link to the steppers I bought from Amazon.

https://a.co/d/0gsrDzXU

Color the same. I checked each one and flipped the wiring, still nothing. My question is even if the locations were different, one of them would have responded or at least tried to spin.

Also- when reinstalling the firmware I get an error that says “driver not found” on each axis. But the jackpot 3 is supposed to have them already installed?

Do you think I have to change the wire order within the oem harness?

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That is normal. That just means the board was started with USB powering it either only or first. You need to disconnect USB power and power through the power supply.

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Yes.

After doing that, paste the results of a $SS command from the terminal back here to the forum to examine. Use the preformatted text icon in the editor, it looks like this : </>.

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The picture linked to the steppers shows this order. This is what mine had too. You can pry up the black tab and pull the wires out of the connector and change the order.

No, they won’t spin if the pairs are not in the correct order for the driver. It took me around an hour of reading and rearranging them to finally get the order correct.

Well color me embarrassed. I had been using my benchtop power supply. I came home today to find my actual power supply arrived in the mail. Plugged it in and everything worked!

Diagnosing my power supply another day.

Thank you all for your help. I’ve been looking on these forums for a while. This is a great community, glad to be a part of it!

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No reason to be embarrassed.
Glad you have it running.

Please share more of your build and projects.

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Glad to hear it’s working.

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How are the Stepper Pins wired on the Jackpot3 (+A,-A, +B, -B)?

Sorry, I’m not sure about the order.

@vicious1

Based on the old Jackpot v1, there was a printed label on the bottom:


Since I’m assuming Bart and Ryan like consistency, that gives us AABB as the most likely. For a Stepper that had Polarity markings the pattern of A+A-B+B- wiring worked.

I added a pull request with the A+A-B+B- pattern added to the doc.

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