G28 problem- please help!

[chbeckdb9]

I have included a youtube link that shows the problem I am having. I have gotten to the point of running the M28 command and everything simply vibrates and sorta walks down ( see vid). I have no idea what is happening, I have checked the wiring multiple times but no idea what is causing this. Any suggestions?

http://www.youtube.com/watch?v=NmcShaq4uEI

Thanks!!

[JohnStack]

How smooth is the action of the cheapskates?

Belts not slipping?

Seems to me, it's either that or ....wiring.

[chbeckdb9]

Belts are tight, not slipping.
The cheapskates are pretty smooth. I can't imagine that the slight friction in them would cause that kind of effect.
I have double and triple checked the wiring going to the motors, it exactly matches what is shown in the instruction manual.

[Eaglezsoar]

I have included a youtube link that shows the problem I am having. I have gotten to the point of running the M28 command and everything simply vibrates and sorta walks down ( see vid). I have no idea what is happening, I have checked the wiring multiple times but no idea what is causing this. Any suggestions?

http://www.youtube.com/watch?v=NmcShaq4uEI

Thanks!!

Are you sure you mean M28 or do you mean G28? I thought that M28 was write to SD card?

[chbeckdb9]

Apologies I mean't G28!

[Eaglezsoar]

i know you have checked the wiring but you need to check it again ensuring that each pin is fully seated in the connector where the motors plug into the Rambo.
Sometimes the pins are not inserted properly and they do not make good contact. You need to visually inspect each pin.
The computer you are using should have most programs that run in the background not running such as antivirus, spyware detection, etc. You do not want any
programs using resources other than the software needed for the printer. What do you have your motor current set at for the various axis? These are set via
the firmware. Are you running the repetier firmware from Seemecnc?

[lordbinky]

Make sure your connection check include taking a multimeter to the plug end of your stepper motors and verify each pair of coils are in the right places of the plug. To me it doesn't look like a bad connection but a bad wire order.

[chbeckdb9]

I checked the wiring again, and pulled each 4 pin motor connector out, inspected it and plugged it back in. All had a nice fit. Each has the wire order just like in the build manual, showing yellow, blue, red, green. I attached a photo showing the connector. I am using the repetier available on seemecnc. I have not altered the motor current, I have only done exactly what it says in the manual. Of course this could still be the problem.

[lordbinky]

Ok, give me a minute, but based on that picture the problem is in your cables.

[Polygonhell]

The pins aren't fully seated in the connectors, they go all the way in and a bit more.

[cambo3d]

I checked the wiring again, and pulled each 4 pin motor connector out, inspected it and plugged it back in. All had a nice fit. Each has the wire order just like in the build manual, showing yellow, blue, red, green. I attached a photo showing the connector. I am using the repetier available on seemecnc. I have not altered the motor current, I have only done exactly what it says in the manual. Of course this could still be the problem.

yes those pins are improperly crimped, not allowing your pins to fully seat. they need to go all the way in.

[lordbinky]

My dog came and threw up under my desk, so that took me longer than I thought.... you'd figure he wouldn't eat stuffing from toys if it did that but.....

Anyways.. Here's pictures of my connector. It clicks into place when done right, you should have to press the little tab down to pull the back out, and you will not see the base of the connector

edit: Just to give another example apparently lol...

[chbeckdb9]

Thanks! that got it working.
I really appreciate the quick responses, I can't believe I overlooked something so simple.

[jmick]

HT-225D Full Cycle Ratchet Crimping Tool with interchangeable die set HT-225D
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[geneb]

That's essentially the same tool I have, but for a hell of a lot less than what I paid for it. I wouldn't mind finding a source for new dies...

g.

[Eaglezsoar]

The HT-225D is available from Amazon for $23 with Prime Shipping. Great price if you are a Prime shipping member.