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strange noise coming from v slot gantry

Discussion in 'Laser Cutters' started by james poulton, Jun 9, 2018.

  1. james poulton

    Builder

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    Hey guys, what could be possible cause of this noise, its coming from the stepper motor. no mains to it yet as im modifying the bed size.

    thanks in advance
     

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  2. Gary Caruso

    Gary Caruso OpenBuilds Team
    Staff Member Moderator Builder

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    don't do that, the motor is generating when you spin it and you are hearing that.. if it's connected to the driver then you can damage the driver.
    OR it could be your wheels too tight, i can't tell in the video... but still don't do that :)
     
  3. james poulton

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    thanks Gary, newbie here....could you explain a little about that mechanism? does the energy go back from the motor to the driver, a bit like a dynamo? its not my wheels ive got that pretty spot on i think :)
     
  4. Gary Caruso

    Gary Caruso OpenBuilds Team
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    A motor and a generator are the same, when you spin the motor (manually) you are producing voltage.
    The voltage is proportional to the speed you move it, and you can exceed the voltage some of the driver components are safe to run at.
     
    Mark Carew and GrayUK like this.
  5. james poulton

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    Cheers Gary much appreciated.
     

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