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stepper motor vibrating instead of moving

Posted by mcti 
stepper motor vibrating instead of moving
April 11, 2018 04:16PM
Hi everyone!

I am trying to get my Ramps 1.4 to work with Marlin Firmware. When I want to move a motor with Pronterface, it only shakes rather than moves.

- neither Stepper Driver A4988 nor DRV8825 work
- I have tried all configurations of wiring the stepper to the board, nothing works.
- Adjusting the stepper voltage does not work either
- I have tried using different speeds and steps/mm, but only vibrating

Right now I am quite desperate, does anybody have similar problems or even better know a solution?

Thanks for your help in advance!
VDX
Re: stepper motor vibrating instead of moving
April 11, 2018 04:43PM
... either it's way too fast, so the motor ist stalling -- or one of the coils is not connected, so it shakes only around one position ...


Viktor
Re: stepper motor vibrating instead of moving
April 12, 2018 02:41AM
The best way to test the general functionality of drivers and steppers is to flash Ramps_test.
If the stepper still vibrates, you can test the coils of the stepper by multimeter ( resistance between black/green and blue/red is the same? )
If you don't have a multimeter, you can connect above mentioned wire pairs and turn the stepper shaft by hand. You should feel a resistance.
If the stepper is OK, then replace the driver.

Edited 1 time(s). Last edit at 04/12/2018 02:46AM by o_lampe.
Attachments:
open | download - _Ramps_test.ino (3.2 KB)
Re: stepper motor vibrating instead of moving [solved]
April 12, 2018 01:01PM
Okay I figured it out smiling smiley

I had to swap the red and blue cables. Both go to the same coil, you cannot measure it with an Ohmmeter.

Also I got confused because the speed in Pronterface is mm/min and not mm/s.

Thanks!
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