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  1. #21
    Administrator bolsoncerrado's Avatar
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    If memory serves well you just need to plug positive and signal. Just keep the same color order:


  2. #22
    3D Printer Noob
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    Hi,

    I've recently installed my Rumba board with the DRV8825 drivers (ordered everything from Ooznest). I uploaded firmware ( http://www.print3dforum.com/showthre...e-200-Firmware) and I am able to connect to my printer aswell as start heating bed and extruder. unfortunatly I have no controls over any of my stepper motors. Can anybody help me?

  3. #23
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    Quote Originally Posted by BGflor View Post
    Hi,

    I've recently installed my Rumba board with the DRV8825 drivers (ordered everything from Ooznest). I uploaded firmware ( http://www.print3dforum.com/showthre...e-200-Firmware) and I am able to connect to my printer aswell as start heating bed and extruder. unfortunatly I have no controls over any of my stepper motors. Can anybody help me?
    Did you insert the driver chips in the correct orientation? The two different types of drivers face different ways, unfortunately if you have them the wrong way round you may have damaged them

  4. #24
    Administrator bolsoncerrado's Avatar
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    If you pay attention to the pinout of the original board you can compare it to the pinout of the DRV chips you got. Also check this google image:




    As you can see, they're DRV chips on a RUMBA board and the potentiomenter is close to the MOTORS connector, yours are upside down I think. But all depends on the vendor of those DRV.

    On mine I'm 99% sure my potentiometers were also touching the MOTORS connector.

  5. #25
    3D Printer Legend
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    @ Bolson - maybe you should delete some of these last posts as they are duplicated?

  6. #26
    Administrator bolsoncerrado's Avatar
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    Different image, they're not.

  7. #27
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    still troubles

    I have some troubles with motors after board change.

    when I send a command to move by 1 mm I got a try from printer but it remain in actual position.

    I forgot something?

    20160613_183942.jpg

    I set DRV8825 tp 0.5-0.6V

  8. #28
    Administrator bolsoncerrado's Avatar
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    What do you mean "you got a try"?

  9. #29
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    Quote Originally Posted by bolsoncerrado View Post
    What do you mean "you got a try"?
    It make a noise and move a bit. In some case with Y I successful moved by 1 mm, but only for some steps. With Y and Z nothing, only noice and vibration.

  10. #30
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    You need to watch this video: https://www.youtube.com/watch?v=89BHS9hfSUk
    Another problem might also be a broken connection with the motor. A single disconnected wire can cause the motor to behave wrongly.
    You should get at least 1 stepper driver working properly and test all the motor cables on that.
    Then rolling out all the possible problems using the same stepper driver attached on each of the motor connections.

    I change the pins.h on the firmware to point the pins of motor that I want to test to the Extruder0 and then simply send extruder movements on the G code. But this is because I have a delta printer and I can't move only 1 motor at a time. With your cartesian printer you just pick the X or Y movement and test the motors directly on one of these.
    Last edited by Joao; 06-14-2016 at 12:45 AM.

 

 

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