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General Mach Discussion / Re: Disable THC Temporary
« on: December 01, 2014, 12:18:58 PM »
i disable thc by using a dpdt relay controlled thru an mcode. that will break the connection to your breakout board. i use m8 to turn on the relay which disables the thc. m9 turns off the relay which enables thc signal to the breakout board. create a button for your screen and click on for thc off or on. you can turn off and on in your gcodes. turn off for cutting small holes . works well for me . you can also add a simple joystick to the relay terminals and use it to control height manually with thc turned off.