I’ve been tinkering with the G0704 based CNC machine’s spindle controller again, and now it’s able to step and direction control to give me fully automatic spindle speed control.
As you can see, it’s now at least able to home itself properly again. Soon the touch probe will be here and I’ll be able to start making chips again, but I’ve still got some motor guards to make up and the flood coolant pipework to sort out.