Hello, I'm making a arduino uno based cnc ploter, using this cnc shield :
but so far I've tested the grbl only by uploading the .hex file into arduino by something called the Xloader: http://russemotto.com/xloader/ and moved my motors around on a 3 axis machine with GRBL controller: http://zapmaker.org/projects/grbl-controller-3-0/
and that way i had no way of seeing the program itself and no way of making adjustments like max distance or stuff like that.
now the first link shows how to load the GRBL into arduino IDE and i was wondering if theres a way i could make adjustments there.
The ploter im building has only 2 axis and an electro-magnet. and i need a way to change the Z-axis movment up and down into the on/off action of the magnet (the magnet puls down the pen to the paper if that wasn't clear)
does anyone knows how to go about it?