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GRBL or Ramps (w/Marlin)?

Discussion in 'SketchUcam Help' started by Boarder101, Sep 14, 2016.

  1. Boarder101

    Boarder101 New Member

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    Been scratching my head over this - but thought I had finally got the answers I needed - the decision was to go with an Arduino UNO board, paired with a 'CNC shield' so I can use the A4988 drivers ive already got - and then load GRBL onto it.

    However, just been clicking around in the settings menu and found the:

    "Force all g-codes for Marlin" statement.

    By activating this, would that mean I could put the exported file onto an SD card, and plug it straight into a RAMPS1.4 board ive got flashed with Marlin for use on a 3d printer I have without any need for modifications? (just disconnect the board from my printer and plug the steppers in from the mill)

    This forum, the youtube videos, and the help-sheet have been fantastic. I have everything I need now - apart from a functioning board to actually begin using the mill!

    Josh
     

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    Boarder101, Sep 14, 2016
    #1
  2. swarfer

    swarfer Moderator Staff Member

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    It might mean what it says in the help/manual (big blue question mark in the toolbar) <-:
    Code:
    Force all G-codes on for Marlin
FALSE (default) = use optimized G-code output that does not repeat G commands if they are not needed
TRUE = force output of G code on all lines, useful for Marlin firmware that requires this.
    However, I was recently told that there are some more things that Marlin needs in the G-code so you may NOT to be able to 'just run the code'.

    Problem is that Marlin does not adhere to the G-code standards much, they have left out a bunch and customized a bunch, so it only really works well with the slicers that have customized their output to match what a 3D printer needs,, and Marlin in particular.

    Therefore I advise you to keep going with the Uno+Shield+GRLB. 4988 drivers are very cheap so do get some extras to put permanently in the CNCshield, it will save many headaches down the road. Swapping a controller between machines can be done, but is a pain, there will always be some setting you forget to reset and then waste a bunch of materials , time etc.

    go for it!
     
    swarfer, Sep 14, 2016
    #2

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