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A simple program to control CNC Shield to calculate step per millimeter and move/test axis movement
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README.md

Arduino CNC Schield Control

A simple program to control CNC Shield to calculate step per millimeter and move/test on axis. I used this program to calculate step/mm.

The my Cyclone PCB Factory project is described here https://www.instructables.com/id/Cyclone-PCB-Factory-My-Way-Step-by-Step/

<axis> 			= x, y, z
<status> 		= 1 (activate), 0 (deactivate)
<direction> 	= 1 (invert direction), 0 (normal direction)
<speed> 		= impulse delay in microsenconds

Commands:

g,<axis>,<status> 		--> Example: g,x,1 (start x movement)
d,<axis>,<direction> 	--> Example: d,x,1 (set direction to inverse)
v,<axis>,<speed> 		--> Example: v,x,2000000 (set delay step to 2000000 microseconds)

Basic,

  • upload the sketch
  • connect via serial at 9600 baudrate
  • now you can send command via serial interface.

Usage,

  • position the spindle to the edge (<g,x,1>, when you are near the edge <g,x,0>)
  • then copy step number (ES: 2345678) and mark the position of splindle (ES: 23mm from edge)
  • start splindle movement to the other edge of axis (<d,x,1> change direction <g,x,1> start movement)
  • stop near the other edge
  • then copy step number (ES: 2654678) and mark the position of splindle (ES: 166mm from the first edge)
  • calculate total step (ES: 2654678 - 2345678 = 309000 total step) then calculate distance traveled (ES: 166mm - 23mm = 143mm)
  • calculate step/mm (ES: 309000/143=2160,839160839161)

More distance traveled more precision you can obtain.

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