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x motor buzz only

Discussion in 'Technical Support' started by Robert Nelson, May 5, 2014.

  1. Robert Nelson

    Robert Nelson New Member

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    Hi,
    I turned on the Robo3D today, and booted everything up. When I hit home, the x-motor had a buzz or hum, but doesn't move. Toward the end of the log file during the connection there is an error. Any suggestions?

    15:21:20.531 : start
    15:21:20.532 : echo: External Reset
    15:21:20.532 : Marlin 1.0.0
    15:21:20.532 : echo: Last Updated: Feb 24 2014 10:58:57 | Author: (RoBo3D, R1 Single Extruder)
    15:21:20.532 : Compiled: Feb 24 2014
    15:21:20.532 : echo: Free Memory: 4005 PlannerBufferBytes: 1232
    15:21:20.532 : echo:Hardcoded Default Settings Loaded
    15:21:20.532 : echo:Steps per unit:
    15:21:20.532 : echo: M92 X80.00 Y80.00 Z2267.72 E723.38
    15:21:20.532 : echo:Maximum feedrates (mm/s):
    15:21:20.532 : echo: M203 X500.00 Y500.00 Z5.00 E25.00
    15:21:20.532 : echo:Maximum Acceleration (mm/s2):
    15:21:20.532 : echo: M201 X9000 Y9000 Z100 E10000
    15:21:20.532 : echo:Acceleration: S=acceleration, T=retract acceleration
    15:21:20.532 : echo: M204 S3000.00 T3000.00
    15:21:20.533 : echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
    15:21:20.533 : echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
    15:21:20.533 : echo:Home offset (mm):
    15:21:20.533 : echo: M206 X0.00 Y0.00 Z0.00
    15:21:20.533 : echo:pID settings:
    15:21:20.533 : echo: M301 P22.20 I1.08 D114.00
    15:21:23.949 : echo:SD init fail
    15:21:23.949 : echo:Unknown command: ""
    15:21:23.969 : FIRMWARE_NAME:Marlin V1; Sprinter/grbl mashup for gen6 FIRMWARE_URL:http://www.robo3d.com PROTOCOL_VERSION:1.0 MACHINE_TYPE:RoBo 3D EXTRUDER_COUNT:1
    15:21:24.279 : FIRMWARE_NAME:Marlin V1; Sprinter/grbl mashup for gen6 FIRMWARE_URL:http://www.robo3d.com PROTOCOL_VERSION:1.0 MACHINE_TYPE:RoBo 3D EXTRUDER_COUNT:1
     
  2. Mike Kelly

    Mike Kelly Volunteer

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    What troubleshooting have you done so far?

    Try and isolate the issue by trying to run the motor on a different driver.
     
  3. Robert Nelson

    Robert Nelson New Member

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    I have reset and rebooted the computer and Robo3D.
    I am able to move the x-head with little force, but slightly more than with the power off. The table will not move with the same gentle force.
     
  4. Robert Nelson

    Robert Nelson New Member

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    OK, so X motor works when plugged into the Y spot
     
  5. Mike Kelly

    Mike Kelly Volunteer

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    What about the other way around.
     
  6. Robert Nelson

    Robert Nelson New Member

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    The Y-motor doesn't drive the table when plugged into the x driver spot
     
  7. Mike Kelly

    Mike Kelly Volunteer

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    can you carefully swap the stepper drivers from x and y then try running x with that one. I'm wondering if the stepper driver is bad or if it just needs tuning. Follow this for tuning steppers: http://reprap.org/wiki/Pololu_stepper_driver_board you can also probe the small circle in the upgrades picture.

    Do you have a multimeter?
     
  8. Robert Nelson

    Robert Nelson New Member

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    I have a multimeter at home... I don't have time to switch the motors tonight.
    So, the Y motor doesn't drive the table plugged into the x driver. It also doesn't hold the table in place under slight pressure under power.
    The x motor works fine when plugged into the Y driver...
    It doesn't seem to be the motor.
     
  9. Mike Kelly

    Mike Kelly Volunteer

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    Wow ok I thought I doublt posted but apparently it just ended with me deleting my post. Re-read what I said above with the key word added in.
     
  10. Robert Nelson

    Robert Nelson New Member

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    Sorry, I thought I was confused by why you wanted to physically switch the motors... so I deleted the post... but the problem doesn't seem to be the motor.
     
  11. Mike Kelly

    Mike Kelly Volunteer

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    Yeah I'm pretty sure it's the driver Hopefully just needs to have it's amperage tuned but it might be bad. Though the fact that it buzzes indicates it's getting power.
     
  12. Robert Nelson

    Robert Nelson New Member

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    Is there an amperage tuning procedure?
     
  13. Mike Kelly

    Mike Kelly Volunteer

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    Yeah I'm not familiar with your electrical knowledge, but it's laid out in the stepper driver wiki entry You essentially just need to measure the voltage as described in the picture, then compare that to a working motor. Adjust the screw with the plastic screw driver they supplied you to match the voltage.
     
  14. Robert Nelson

    Robert Nelson New Member

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    I can handle all sorts of electrical troubleshooting and delicate soldering, but I didn't get any tools with my printer - maybe because I bought it assembled(?). At least when I was in grad school working on building scientific instruments it wasn't a problem. I have a micro-driver with a plastic handle similar to the one pictured, but does the whole driver and head need to be made of plastic? I think I have a plastic flat driver in a kit at home, but I don't know if there is a Phillips or if it's that small.
     
  15. Mike Kelly

    Mike Kelly Volunteer

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  16. Robert Nelson

    Robert Nelson New Member

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    No, I didn't get any accessories. Just the printer, cable and short test filament. However, my board looks like the photo in the wiki link (mostly), and it's definitely a Phillips head set screw.
     
  17. Mike Kelly

    Mike Kelly Volunteer

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    You should contact them and get them to ship you the accessory kit. It's not always needed if you have a full tool selection: http://www.robo3dprinter.com/pages/technical-support

    The screw driver is flat head, it just fits within the phillips on the stepper driver. Only reason it's plastic is to prevent users from shorting it, but you can use whatever tool you want. I just suggested the plastic one because that's specifically for tuning steppers and probably came in their kit of for the arduino/ramps board.
     
  18. Robert Nelson

    Robert Nelson New Member

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    Got the voltages measured...
    x= 0.362V
    y =0.308V
    z =0.357V
     
  19. Jerry RoBo 3D

    Jerry RoBo 3D Administrator
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    Hi Robert,

    Would you be able to switch a stepper driver around? Put one you know is working, in to the spot of the non working motor, and let us know the result.
     
  20. Robert Nelson

    Robert Nelson New Member

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    Is the driver removed by pulling straight up?
     

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