This board is a optoisolated parallel port breakout board that will make it easier to connect your stepper drivers to the computer. The parallel port pin configuration is based on the one used for Enhanced Machine Controller (EMC). More info on EMC can be found at LinuxCNC.
This opto breakout board can also be used by TurboCNC, MACH2 or any cnc program that allows the individual assignment of parallel port I/O pins.
Opto schematic (.pdf), layout (.pdf) and parts list (pdf).
Bare PC Board: $15.00
Use the following info to configure TurboCNC or MACH2 parallel port I/O pin assignment.
Parallel Port I/O Pin
|Stepper Driver Connection|
|x,y,z home switch|
|x,y,z limit – switch|
|x,y,z limit + switch|
turbocnc.ini – This is a generic TurboCNC configuration file that has been setup with the proper parallel port I/O pin assignment to be used with our breakout board. Copy this file into your TurboCNC directory. You will still need to modify certain TurboCNC settings to match your CNC machine configuration.