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Discussion in 'Troubleshooting' started by Jeffrey Wheeless, Apr 28, 2016.

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  1. Geof

    Geof Volunteer Moderator
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    Yea i cant recall everything in this thread
     
    #61 Geof, May 12, 2016
  2. Geof

    Geof Volunteer Moderator
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    Screen what now ? Lcd ??? Has nothing to do with stepper drivers. It will work fine.
     
    #62 Geof, May 12, 2016
  3. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    Well I mean is [the screen] drawing to much power away from everything else? Thats the only difference, aside from the new board, back when it worked.
     
    #63 Jeffrey Wheeless, May 12, 2016
  4. Geof

    Geof Volunteer Moderator
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    I dont think the screen would draw that power away. I think its more of a not tuned driver issue. Probably getting good voltage on and lacking voltage out. New board is a ramps board? New drivers need tuned
     
    #64 Geof, May 12, 2016
  5. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    How might one go about updating those drivers? Is it still a manual process similar to the firmware for the e3d?
     
    #65 Jeffrey Wheeless, May 12, 2016
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    #66 mark tomlinson, May 12, 2016
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If you google for pololu pots calibration you will get a ton of other references if those are not enough.
     
    #67 mark tomlinson, May 12, 2016
  8. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    Your fine and thank you for the link. I guess I kinda have deviated a little ways from the initial point so a summary may help.

    Replaced the heater for the printer block, but fried the MOSFET. Got new board and new alert from printer for thermistor. Changed out bulk buy thermistor for awesome stud thermistor. Saw good chance to install screen since I had it open. Testing proved no good.

    Side note I do have added led strips in my case but I doubt those will make a difference.
     
    #68 Jeffrey Wheeless, May 12, 2016
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    LED strips are moot, they don't draw much.
    When you swapped the RAMPS did it include the stepper driver cards already installed or did you have to move those over from the old one?
     
    #69 mark tomlinson, May 12, 2016
  10. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    I'm not sure what that term means but I'm guessing it is those small square ish things with the many legs and the heat syncs; if that is the case then I moved them over.
     
    #70 Jeffrey Wheeless, May 12, 2016
  11. Geof

    Geof Volunteer Moderator
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    Yes stepper drivers are the 5 small guys on the ramps board. They control the voltage to drive the steppers
     
    #71 Geof, May 12, 2016
  12. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    Oh, I guessed right, I moved them over carefully. But one of the kits I bought came with some.
     
    #72 Jeffrey Wheeless, May 12, 2016
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I was afraid you were going to say that :)
    Usually they don't need tuning between RAMPS boards, but sometimes they do.
     
    #73 mark tomlinson, May 12, 2016
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Then you might want to try just sapping in the new ones (you can do them one axis at a time - X/Y/Z if you want) and see if they work without retuning. There is one for each axis and one for the extruder (except on the R1+ where there are two different ones for the Z motors -- they used the spare extruder stepper driver to have two Z steppers)
     
    #74 mark tomlinson, May 12, 2016
  15. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    I can unmove them and install the red ones that match the new board
     
    #75 Jeffrey Wheeless, May 12, 2016
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  16. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Good idea. Hopefully they don't need tuning.
    They *might* so it is not a sure thing, but hopefully not :)
     
    #76 mark tomlinson, May 12, 2016
  17. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    How do you define the process of tuning in this regard?
     
    #77 Jeffrey Wheeless, May 12, 2016
  18. daniel871

    daniel871 Well-Known Member

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    If they move properly, no tuning required. If they don't move, tuning is required.
     
    #78 daniel871, May 12, 2016
  19. Jeffrey Wheeless

    Jeffrey Wheeless Member

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    Well is tuning like going into a program and changing a 1 to a 5 or something that is very painful
     
    #79 Jeffrey Wheeless, May 12, 2016
  20. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    To tune the stepper drivers there are two approaches. See the links I re referenced (the video one as well).
    One approach is to hook everything up; and dial the voltage up until the stepper is not dropping steps.
    The other is to read the reference voltage off of the stepper driver card and set it to where you should have more than enough current to drive the stepper.
     
    #80 mark tomlinson, May 12, 2016
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