my steppers on y only move one direction an on the other direction they go opposite of each other an x,x1 just grind can any one help new jackpot board from v1e shop 2 weeks ago running duel endstop
Maybe try this:
To reverse a stepper motor, flip any one plug going to that stepper. You can make the flip where the stepper plugs into the wiring harness, or you can make the flip where the harness plugs into the stepper driver. Make the flip when the control board is unpowered.
If you are confused about what direction each stepper is moving, you can isolate each stepper by unplugging one of the pair and running just one stepper per axis. The axis won’t move far becaue it will skew, but it will move far enough for you to deterime direction. You want to do the unplugging with the power off to your control board. Unplugging a stepper while it is delivering current to a stepper motor can blow the stepper driver. Also, isolating steppers will help you determine if one of the stepper is not functioning for some reason.
If you have all the stepper moving in the correct direction, and still have the issue you outline (stepper only appearing to move in one direction), then there are several things that may be causing your issue, including mechanical issues (often the grub screws connecting the stepper to the pulley), and electrical issues including the one indicated by Britt. Post back when you have the direction solved with further information on your issue.
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I’ve tried flipping the cables same problem in opposite direction for example y+ they go the same direction but y- they go different direction an the x stepper just grind in one spot
I had this a while back too. I loosened all the bearings on the x axis and sprayed the bearings with silicone spray. I also found that the truck clamps were cracked. I replaced them and I retightened the bearing bolts. The x axis moved freely again.
If you unplug your steppers from the drivers, can you move the x axis easily?
What happens when you hit home on either axis?
This is either mechanical binding or bad connection. Make sure your belts are not too tight and your bearings are not too tight, and nothing is hitting.
I can move the x axis freely with not no power to the board an wen I home both axis x y binds themselfs
We are not there to put our hands on it so you really need to take a very close look and help us out.
Let’s see a picture of your build.
You have not given us enough info to help much. Other than it is binding or a wiring issue.
One thing you could try:
Slacken off the X and Y belts so they are clear of the stepper pulleys and then send a move command in each direction - does each stepper turn or judder in place?
If they turn move them again and take hold of each pulley in turn - can you feel the shaft slipping or stalling?
Could you also confirm which jackpot firmware you’re using - have you made any changes, did you specify mpcnc when ordering to get the correct config.yaml?
Clear photos of the board as you have it wired up is also sometimes useful.
Mpcnc 10/24/24 I didn’t make any changes by Ryan v
I just remembered one more thing. My idler pulley screws were loose. Check those too.
I assume you are talking about the grub screws for the toothed pullies on the motors. If so that’s what I was bout to say as well!
No, it was the screws for the idler pulleys. Not the grub screws. It took me quite a while to find that.
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for some reason i cant upload images but i connected all my steppers to a skr 1.2 board from v1e i got a couple years ago an everything worked perfect
Something similar happened to another person recently. They didn’t remember selecting the MPCNC config when they bought their Jackpot. Download this config.yaml and upload it to your Jackpot and hopefully that will solve your problem too.
Here’s a great writeup on how to update the Jackpot:
I JUST LOOKED AT MY ORDER AN AN IT SAYS UNDER FIRMWARE MPCNC MY
Order IS #26402 IF RYAN CAN LOOK IT UP
Can you copy the output of $SS in the terminal and paste it here?
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I don’t keep track, $ss, in the terminal will tell us.