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

MKS GEN L Firmware download for old ROBO3D R1

Discussion in 'Mods and Upgrades' started by tonycstech, May 1, 2020.

  1. tonycstech

    tonycstech Active Member

    Joined:
    Dec 16, 2013
    Messages:
    586
    Likes Received:
    193
    I hope this will be helpful for some who think about installing MKS GEN L using LV8729 stepper drivers.

    There are changes in the firmware.
    I have additional preheat preset for PETG
    Some useless menu items were removed. (power ON, cool down)
    POWER OFF moved to main screen instead of prepare menu.
    Steps and speed are adjusted to result good prints to match LV8729 drivers .
    Using 1/32 steps for all motors.
    Steps for 1/64 are for X and Y (320,320)
    E1 (second extruder slot) is used for 2nd Z Axis motor because ROBO3D R1 has 2 Z-axis motors.
    That means you can have only one extruder. (in case you have more)

    Flash settings: (make sure to select correct PORT)
    How to flash.jpg
    MKS GEN L Will require a new hole for USB port as well as different mount holes.
    I mounted mine like this so holeis right next to the old one and cooling fan blows directly on to the stepper drivers:
    DSC00299.JPG
    Jumper configurations: high low high (middle jumper removed)
    DSC00301.JPG
    Diagram for common drivers and jumper settings for MKS GEN L
    HTB1FNw1kmfD8KJjSszhq6zIJFXan.jpg
    Everything else is pretty standard.
     

    Attached Files:

    #1 tonycstech, May 1, 2020
    Last edited: May 2, 2020
    mark tomlinson likes this.
  2. tonycstech

    tonycstech Active Member

    Joined:
    Dec 16, 2013
    Messages:
    586
    Likes Received:
    193
    After trying more drivers, i found that TMC2208 work best for XYZ and LV8729 for extruder.
    With that, all movements are at 1/16
    Z axis must be inverted for TMC2208

    #define INVERT_Z_DIR true
    #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,2560,100}
     
    mark tomlinson likes this.

Share This Page