Think I have my head around the process involved with DTHC now.

Think I have my head around the process involved with DTHC now. I can take this flow chart and translate it into Arduino programming code. I’ll use simulated inputs to get it working on the bench and controlling the Z-axis via Mach3. Once that’s done the interface board can be designed and built for the old plasma cutter.

Excellent. I now have a Galaxy S3, so I can follow this better.