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RoBo3D Autolevel via Mike Kelly

Discussion in 'Mods and Upgrades' started by Mike Kelly, Jun 1, 2014.

  1. Billm

    Billm Member

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    Do you put this in your start g code?
     
  2. neomage2021

    neomage2021 New Member

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    I'm still having trouble. I can set the offset to something ridiculous like 10 and it doesnt matter at all still, looks like it still goes back to trying to start the print at 0.3 instead of the offset + 0.3

    If i turn off auto leveling and just set the Z offset I can at least print again
     
    #82 neomage2021, Aug 22, 2014
    Last edited by a moderator: Aug 22, 2014
  3. Hockeyjoe21

    Hockeyjoe21 New Member

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    I had the same issue when I first installed the auto level kit. Seems to me that any offset you put before you run G29 gets canceled out. You have to run the G29 command, raise the hot end, then reset the Z axis zero. At least that's how I got mine working. I use Repetier and Slic3r and this is what I have as my start code:

    ; Start G-code
    M84 S0 ; Disable motor timeout
    M190 S[first_layer_bed_temperature] ; Set the bed temp and wait for it to heat up
    G28 ; Home all axes
    M109 S[first_layer_temperature] ; Set the extruder temp and wait for it to heat up
    G28 Z0 ; Home Z again in case there was filament on nozzle
    G29 ; Autocalibrate bed
    G1 Z0.8 ; Adjust Z offset
    G92 Z0 ; Define new Z home
    ;-----
     
    5 people like this.
  4. Billm

    Billm Member

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    That makes sense. I will try it tomorrow.
     
  5. Billm

    Billm Member

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    Thank you. Thank you.
    It worked the first time I tried it and the auto level works.
     
  6. neomage2021

    neomage2021 New Member

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    Yay it worked. Auto level works though i need to tweak my mounts a bit. Now that it is working that is much easier to do
     
  7. palmi

    palmi New Member

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    I've got 2 questions, how do i flash the arduino and where do i put the G29, G92 Z0 , G1 Z0.5 . Im using [​IMG]
     
  8. lemuba

    lemuba Active Member

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    Thank you!!! This is also the perfect setup for the Simlify 3D custom settings! I had also the problem that the nozzle scratch over the glas bed after auto levelling - now autolevel works perfect and repeatable - the first layer alway perfefct!

    My prints look brilliant now (PLA) - Nylon, etc. to GO.

    Best regards,

    Matthias
     
  9. palmi

    palmi New Member

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  10. Mike Kelly

    Mike Kelly Volunteer

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    After G28 Z0
     
  11. Marcus Siwica

    Marcus Siwica New Member

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  12. Mike Kelly

    Mike Kelly Volunteer

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    That looks right, though you might ask them if it fit a 13mm wrench
     
  13. Marcus Siwica

    Marcus Siwica New Member

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    hmm i have the beta maschine. have they really a metric thread.
    i want to screw it from the top down, is this wrong ?
    the first few millimeter are a little bite smaller than the rest.
    i can screw it 4-6 mm down but not more.
     
  14. Mike Kelly

    Mike Kelly Volunteer

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    Sorry I didn't understand your previous question entirely.

    All printers prior to ~August of this year have 5/16"-18 rods. You need a 5/16"-18 Rod Coupling Nut
     
  15. John Rygg

    John Rygg Active Member

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    Anyone know where to get the right sized couplings ? The ones at Ace are too small as well as the ones on amazon. They do not fit a 13mm wrench.

    any links to sources ?


     
  16. Marcus Siwica

    Marcus Siwica New Member

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    i cant find this item in Germany.

    would be very grateful if anyone share links with the right item....
     
  17. Mike Kelly

    Mike Kelly Volunteer

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    Marcus, it would probably be easier to find M8 rods and cut them to length, than it would be to find 5/16"-18 parts in europe.
     
  18. Marcus Siwica

    Marcus Siwica New Member

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    hmm other rods mean, i need more or less steps to lift the axis up or down or not ???
     
  19. Mike Kelly

    Mike Kelly Volunteer

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    M8 rods use 2560 steps per mm. Robos shipped at late august have M8 rods.

    5/16 is something like 2267.something, which means you don't get an even step per layer height so you should be using off layer heights anyways.

    Just try and buy a straight stick of M8 rod at 1m. Cut it down to around 305mm to no more than 355mm.
     
  20. Marcus Siwica

    Marcus Siwica New Member

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    hmm the next problem is the coupler M8 are all for 11mm wrench . 13mm is not available.
    Sorry for the many questions ...
     

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