This is an ongoing development.......
I've been working on an Arduino-based Torch Height Controller for a while. I currently have the hardware design stable and functional and mostly complete THC code. While there is a Windows-based app to control the THC - I've recently been working on a Mach Plugin.
This is my first Mach Plugin. I have initial functionality working. The plug-in communicates with the THC over a user configurable COM port. It allows setting the THC operating mode, setting the target cutting voltage and monitoring the operation.
The plugin spawns a new thread for handling the serial port communications. It also gives the ability to set Mach's "THC Mode" to ON when starting. (There is a configuration option to stop and restart the serial thread - that doesn't work yet. If you change the serial port you have to stop and restart Mach.)
Software source code, hardware design information and a user guide is available on github under the "regeg/ArduinoTHC" project.
https://github.com/regeg/ArdunioTHCVideo of the test cuts with steel on a steep incline can be seen at:
http://www.youtube.com/watch?v=H2GjW5V7YFsAll of the history of the development and lots of voltage captures of cutting are on the Plasma forum at the Everlast Generators site.
http://www.everlastgenerators.com/forums/forumdisplay.php/13-Everlast-Plasma-Cutters-(PAC)I'd really like to get people building the THC and contributing to the project.