Got the new tool-setter working. I spent a few hours swearing at the thing because I couldn’t get it do the tool offsets properly. Fortunately I remembered @jjneeb muttering about the master tool in his video, and after a re-watch I had a look at my config files. Turned out I was using a very early version of RapidChange’s Mach 4 config file which didn’t have the master tool settings.
Updated everything and bob was my mother’s auntie.
Video of the initial testing once I got it sorted: Youtubes PG FUN 3D tool-setter on the Avid CNC
V1 of the instructions to add the probe attached. Uses a 12V relay module so the new probe acts just like the standard Avid CNC touch plate - ie a basic on/off switch. This has the advantage that you should be able to use any tool-setter - NO/NC/NPN/PNP etc as all it needs to do is trigger the relay module.
Avid CNC tool setter instructions V1 reduced.pdf (2.5 MB)