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
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.
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
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?
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
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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