help getting the motors moving

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Sagirokach
Posts: 24
Joined: Sun Jan 21, 2018 10:32 am

help getting the motors moving

Post by Sagirokach » Fri Jul 13, 2018 4:47 pm

so I just managed to find the time to plug everything to the ramps (for the dolly build) and when I try moving the motors through octoprint I get hissing sounds and the heatsink on the drivers are extremely hot.
I searched all over the internet for a solution cause I so wanted this to work.

I read the voltage on the drivers, tried 0.8, tried 0.4 and the motors either don't move at all or move with skipping steps plus moving in different directions even tho I pressed the same direction button.

Anyone has any solutions for me to try?
I've been at it for 5 hours now.

I'd appreciate the help.

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Moorviper
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Re: help getting the motors moving

Post by Moorviper » Fri Jul 13, 2018 4:56 pm

the drivers are in the right orientation ?

Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: help getting the motors moving

Post by Stefan » Fri Jul 13, 2018 7:03 pm

Also, are the wires paired properly and in the right order?

Once you are convinced of the proper connections (and only then) turn up the current using the tiny dial on the driver. Clockwise usually is increased current. Be sure to do this when the power is off or use a plastic screwdriver.

-Stefan

Sagirokach
Posts: 24
Joined: Sun Jan 21, 2018 10:32 am

Re: help getting the motors moving

Post by Sagirokach » Fri Jul 13, 2018 9:40 pm

The drivers are for sure in the right orientation.

About the order of the cables, at the motor I have red,yellow,green and blue... I'm not sure about the order on the RAMPS, but from what I looked they should be the same.

I adjusted the current and when I turned on the printer it made one move right and then only noises, no movement. :(

Sagirokach
Posts: 24
Joined: Sun Jan 21, 2018 10:32 am

Re: help getting the motors moving

Post by Sagirokach » Sat Jul 14, 2018 7:43 am

I checked the wiring and it was wrong as well, so I fixed it and still the problem remain... the drivers get really hot and it moves erratically.

Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: help getting the motors moving

Post by Stefan » Sat Jul 14, 2018 8:20 am

Recheck the wiring and do not trust the colors. I've seen wire sets sold for steppers come in a variety of orders. I can tell you with certainty that if one plug is RYGB, the other should not be RYGB. One wire crosses.

-Stefan

Sagirokach
Posts: 24
Joined: Sun Jan 21, 2018 10:32 am

Re: help getting the motors moving

Post by Sagirokach » Sat Jul 14, 2018 8:37 am

yeah I checked and changed everything. now I'm 100% sure about the wiring.
still the drivers get extremely hot and the motors sounds like they are skipping steps.

The dials on the drivers is set to the middle. didn't check the voltage now but it's on the middle.
anything else I can check?

and thank you so much for all the input.

Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: help getting the motors moving

Post by Stefan » Sat Jul 14, 2018 8:56 am

With the power off (can't stress that enough) turn the little dials about 45 degrees clockwise from center. You might go as much as 90 degrees, but if the motors still don't turn properly, something else is likely to be wrong.

-Stefan

Sagirokach
Posts: 24
Joined: Sun Jan 21, 2018 10:32 am

Re: help getting the motors moving

Post by Sagirokach » Sat Jul 14, 2018 9:56 am

I'll try that, (and of course with the power off!)
but the drivers should get that hot?
I have a fan working on them but it seems odd... so just checking.

Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: help getting the motors moving

Post by Stefan » Sat Jul 14, 2018 6:34 pm

They DO get hot. I don't think it's a good idea to run them continuously when testing, though, just in case.

Are you testing multiple axes? There is always a possibility of a damaged or defective driver. I blew a few my first time building (remember the screwdriver!).

-Stefan

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