1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Solved *Read pg 8 if you use a Geckotek bed!* Changed power supply, now y axis waves

Discussion in 'Troubleshooting' started by Rat_Patrol, Jun 10, 2017.

Thread Status:
Not open for further replies.
Page 1 of 8
  1. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    The power supply died on my robo3d R1 plus with controller. all I did was replace the power supply and now I've got this y axis wave thing going on. I am using the same filament the same file only thing that changed was the power supply. I even slow down my acceleration and jerk values with no success along with overall printing speed to a crawl absolutely no change. My picture on my phone is too large to post so I won't be able to get a picture until later.
     
    #1 Rat_Patrol, Jun 10, 2017
  2. Kilrah

    Kilrah Well-Known Member

    Joined:
    Apr 18, 2017
    Messages:
    498
    Likes Received:
    332
    Same power supply specs?

    The dying PSU could have killed something on its way out too.
     
    #2 Kilrah, Jun 10, 2017
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Be my guess too. Swap the Y axis stepper driver for another one and see if the problem moves.
     
    #3 mark tomlinson, Jun 10, 2017
    Geof likes this.
  4. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    I should mention that there is no problem when the model is close to the build plate but it gets worse and worse as the model builds height. By 50mm, there is a sawtooth to the model of about 4mm. Close to the build plate, the model is perfect.
     
    #4 Rat_Patrol, Jun 10, 2017
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Still sounds like a stepper driver :) That is the part that the RAMPS uses to drive the stepper and assuming the model is fine you have an issue in the drive. That is:
    1) The stepper motor
    2) belts/pulleys
    3) stepper driver (turns RAMPS signal into current)
    4) RAMPS
    5) Ardunio (highly unlikely)
     
    #5 mark tomlinson, Jun 10, 2017
    Geof likes this.
  6. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    So good source for stepper drivers I can get asap? Like Amazon prime fast?
     
    #6 Rat_Patrol, Jun 10, 2017
  7. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    The new be psu is just a mean well. I actually found my 24v psu went and took out the fuse in the account by plug replaced both.
     
    #7 Rat_Patrol, Jun 10, 2017
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    #8 mark tomlinson, Jun 10, 2017
    Rat_Patrol and Geof like this.
  9. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    Even though I haven't tested it yet I did go ahead and order those Electronics since if I ordered it right now it'll be here on Monday I'll update with whatever I find was issue.
     
    #9 Rat_Patrol, Jun 10, 2017
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Even if you didn't need them today, a full set of spares is nice :)
     
    #10 mark tomlinson, Jun 11, 2017
    Geof likes this.
  11. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    Changed Y axis driver, no dice yet. I suppose the entire ramps board tomorrow.

    Pic of what is happening, only on Y axis. Lower than that on the model, it prints perfectly. AND, not every model is as bad as the others, as I print 4 at a time for cooling reasons. One model is almost passable if you weren't picky, one is terrible, and 2 in between.
     

    Attached Files:

    #11 Rat_Patrol, Jun 12, 2017
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    That is a good picture and helps isolate it, BUT which was is that print on the printer when printed?
    What is X, Y and Z? Label it. Is it printed oriented as you have it in the picture?

    Originally I was thinking ringing:
    http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#ringing

    but know I am thinking it is either Skipping steps (badly):
    http://reprap.org/wiki/Print_Troubleshooting_Pictorial_Guide

    Or mechanical ringing on that axis. I would have expected that it was oriented on the printer so that the "waves" are going up the Z axis, but please confirm. Your thread title says Y
     
    #12 mark tomlinson, Jun 13, 2017
  13. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    The pic is oriented that you see the Y axis "waves", so looking at the Y axis perpendicular. X axis is perfect, Z axis is perfect.

    Isn't like ringing I've dealt with before. I even slowed one print down dramatically: overall speed, jerk and acceleration with no difference. Its like it WANTS to print like this. I rebuilt the file and moved to a new place on the build plate for shits and giggles last night, just checked on it and same results.
     
    #13 Rat_Patrol, Jun 13, 2017
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    So, the answer to "Is it printed oriented as you have it in the picture?" is yes?

    (Y being left-right)
     
    #14 mark tomlinson, Jun 13, 2017
  15. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    I just did some destructive testing, and riddle me this: the infill is NOT affected???????? I use a 30% rectilinear infill. For kicks, I decided to cut open a model. To my surprise, the infill is straight going all the way down. I then basically did a section analysis in real life, and confirmed that the "wave" is limited to the outline, and the infill seems to correct it, or at least isn't NEARLY as bad.
     
    #15 Rat_Patrol, Jun 13, 2017
  16. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    In the pic, Y is up-down, Z is left-right, X is foreground-background.
     
    #16 Rat_Patrol, Jun 13, 2017
  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Then you 'waves' are Z axis waves/ripples and that is more common. It makes more sense as that is the leadscrews (threaded rods on the R1). It didn't make sense that the single Y stepper could easily generate that sort of effect :)

    So my first guess would be that perhaps one of the stepper drivers or stepper motors is losing steps. Not a lot, but enough to cause the oscillation.
     
    #17 mark tomlinson, Jun 13, 2017
  18. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    Z axis? All Z layers are correct?

    I have another test model printing, I'll take a pic with it on the machine.
     
    #18 Rat_Patrol, Jun 13, 2017
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    The ripples are in the Z per your description. Please be precise or we are wasting our time :)
    as the Z changes (assuming your description of the orientation is correct) the layers are wider and narrower. That is a Z ripple.

    In the past (before threaded rods were swapped for leadscrews) we had a huge/long/beat-to-death troubleshooting of Z ripple. While it was not then as pronounced as yours (and yours gets worse as the Z rises I think) it was exactly what you have. Z goes up, layers expand and contract. Back then this was due to the harmonics of the threaded rods/couplers and stepper. Yours is probably (at a guess) a stepper or stepper driver being 'lazy'
     
    #19 mark tomlinson, Jun 13, 2017
    Last edited: Jun 13, 2017
    Geof likes this.
  20. Rat_Patrol

    Rat_Patrol Member

    Joined:
    Dec 14, 2016
    Messages:
    178
    Likes Received:
    24
    A test model currently running. This one WILL have over-heating issues, but I will know more in a few.
     

    Attached Files:

    #20 Rat_Patrol, Jun 13, 2017
Page 1 of 8
Thread Status:
Not open for further replies.

Share This Page