LinuxCNC Mach3 Breakout Board

There are plenty of Break out boards to choose from when setting up a CNC system.  Here’s a very low lost CNC breakout board that can be had from ebay for about five bucks with free shipping from China.  I have one on my demo/setup board (everyone needs one of those) and the board works for me running LinuxCNC on an old IBM/Lenovo PC directly out the parallel port.

bob breakout board plain image

Sometimes these boards are abbreviated BOB (Break Out Board) and if you didn’t know the abbreviation you wondered what Bob was doing in your machine.  Here’s an Ebay link to on of the BOBs that is sure to break immediately after posting:-)  And, another.

The key here is the pinout and setup of the board.  I’ve consolidated a few images from around the web here:

bob breakout board pinout num 1 bob breakout board pin out num 2

bob breakout board hook up imageimage of break out board

Here’s a PDF for installation of the BOB with the same images and setup screens for Mach 3.

Providing references for the images above:
Archivist from LinuxCNC IRC chat  He also has a PDF on this page I didn’t post/reference.
Mach Support for PDF above
Art of Circuits
Steppersonline, Main site for OMC-Steppersonline
banggood sale page

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