Hi, I’ve had the cnc up for about a week - got the kits here. It seemed to work fine, but something has gone south though.
My zaxis seems to sometimes work, othertimes not. I took the stepper off and I’m just running it using manual mode in repetier. For a few minutes it will appear to work, then it starts making grinding noises, runs opposite direction, then will just stop accepting commands. I can turn it off for a while and it seems to “cool down” then I can get a few more commands in. It seems to not like the 1mm steps. (grinding sound) The 10mm steps run smoother - but sometimes in the wrong direction.
I’ve been through the basic software setup on this web site. I’ve even made some carves, but now I’m stuck on this z-axis issue.
My question is how to debug this? Is it the electronics, the software, the stepper?
X/Y seem ok.
Update: I (unplugged everything) switched the Y and Z drivers. The problem seems to stay with the stepper.
Its strange, a lot of the time it works fine, but it gets into fits where it rumbles or goes the wrong way.
It sure feels like a bad connection in the wiring - the way it comes and goes. Is it possible to take the cover off the stepper and verify the connections inside?
I took your suggestion and was going to switch out the wiring harness when I noticed the harness was slightly loose!
I had covered the joint with black electrical tape, and the entire length in PET, but it must have worked loose.
I re-did the tape and it worked great!
Is there a better way to make this connection stay together other than black tape? The connectors seem inherently loose.
I love the small zip tie idea! Thanks for the pic! I had the same issue just a slightly different problem (my wire was shorted or faulty somewhere within the sleeve ‘thanks banggood’).
