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Comments on Profile Post by gailenjensen

  1. Robert Hummel
    Robert Hummel
    Yes any steppers with enough power to move the axis will work.
    Since you say you have steppers and drivers all that's left is the laser driver and figuring out the required signals from the arduino.
    Give the laser v build a good read and learn as much as you can about how to setup and modify GRBL
    Jan 3, 2015
  2. gailenjensen
    gailenjensen
    Thanks Robert. I did the flash for Grbl, so far so good. The motor drivers are the ULN2003 with 4 wires going to the Arduino. Does the hook-up wiring need to be specific pin to pin, ex IN1 to P9, IN2 to P10, etc. etc.? I'll have more questions as I go.
    Jan 3, 2015
  3. Robert Hummel
    Robert Hummel
    I have not played with them drivers so the main thing is figure out your required signals to what pin.
    Yes the pin assignment is best in pairs x axis / step/direction 3,4 y axis 5,6 z if required 7,8 I use the default pin 12 that goes high as my laser diver in/off
    Jan 3, 2015
  4. Robert Hummel
    Robert Hummel
    On/off
    Jan 3, 2015
  5. gailenjensen
    gailenjensen
    Back again Robert. How do the pins from the Arduino to the motor driver get assigned? I see from your prior comment what pins go to where. Does the g-code make that decision or is it through the grbl file?
    Jan 6, 2015
  6. Robert Hummel
    Robert Hummel
    Pin assignment is done through the configuration file.
    You pick the pin layout as you want and then set them.
    Then compile the hex and upload it to your arduino
    You can use my hex but it is compiled from ver .7
    The pin out for my hex is in the build log
    Jan 6, 2015
  7. gailenjensen
    gailenjensen
    Thanks. If you don't mind could I get a copy of the sketch you compiled and uploaded. It'll give me a better idea of what to do.
    gailenjensen at gmail dot com
    Jan 7, 2015
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