Will Mach 4 work on the Controller board that is meant to run Mach 3?
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The Mach3 USB board found here: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board Is not designed to work under Mach4. The Mach3 USB uses a plug-in in Mach3 to function as an interpreter, sending pulses and signals to electronics from commands sent to the board from Mach3. This plugin would need to be updated to be able to work under Mach4 but the board manufacturer would need to do this update. So far, there is no plug-in that will work for Mach4 and this board.