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Solved Upgraded to Titan/v6, now extruder motor dead!!!!

Discussion in 'Troubleshooting' started by Rat_Patrol, Jun 15, 2018.

  1. Rat_Patrol

    Rat_Patrol Member

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    The printer was running very smoothly, but I wanted to lighten up the carriage with a new Titan extruder and V6 hotend combo. Everything went well, extruder turns freely, hotend heats up ,etc. All I did was update the steps/mm for the extrusion in the firmware. Everything works great, but no matter what I do, the extruder motor doesn't do anything. Doesn't even try, doesn't even hold!

    So far, I've done:
    • Grabbed another (the original) stepper motor for the extruder and its cable. Confirmed the driver is dead on the RAMPS.
    • Put the stepper onto another driver, moved that driver. Yup, motor works, sort of. Motor makes weird noses, but at least tried to do something.
    • New driver. Another new driver. Swapped from another motor driver, nothing.
    • New RAMPS board. Nothing.
    • New Arduino board. Nothing.

    What am I missing here?
     
    #1 Rat_Patrol, Jun 15, 2018
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    What did you update exactly? Paste it in.
    Better yet, rollback to the old firmware and see if the stepper motor steps.
    Sounds like you have ruled out hardware.
    Well, it should step on another driver... unless it is dead :) Does sounds like it might just be skipping steps, but still...
     
    #2 mark tomlinson, Jun 15, 2018
  3. Rat_Patrol

    Rat_Patrol Member

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    Literally all I did was change the steps per MM for the extruder to the 827? recommended by E3D.

    I'l try grabbing an older version of firmware and loading that in.
     
    #3 Rat_Patrol, Jun 15, 2018
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Figured, but it needs saying :)

    Putting that stepper on a different driver (with no extruder attached) should result in the stepper motor stepping and if not it is a bad stepper. They usually (for me at least) just outright die when they fail, but it is possible for them to drop steps (just not all steps).
     
    #4 mark tomlinson, Jun 15, 2018
  5. Rat_Patrol

    Rat_Patrol Member

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    Rolled back the firmware, no joy.

    While I'm not sure that it isn't a faulty new stepper, the old stepper doesn't work on that driver either.

    Weird issue, as I've replaced ALL the hardware :confused:
     
    #5 Rat_Patrol, Jun 15, 2018
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That is puzzling. Did you reset the flash EPROM on the unit after making the firmware changes?

    (edit: although replacing the Arduino would have put the kibosh on that)
     
    #6 mark tomlinson, Jun 15, 2018
  7. Rat_Patrol

    Rat_Patrol Member

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    I will preface this with I'm an idiot.

    Won't let me extrude on a cold nozzle :oops:

    Pre-heated it and I'm good. For some reason, m302 didn't allow me to bypass that.
     
    #7 Rat_Patrol, Jun 15, 2018
    mark tomlinson likes this.
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    No, cold extrude is nuked in the firmware :) Glad you sorted it.
     
    #8 mark tomlinson, Jun 15, 2018

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