![]() If you then type, on the MDI line " G31 Z (and a minus number slighly below your copper clad height) the drill will move down, and the stop as soon as it touches the copper clad. In practise if I need to set a drill height, I plug in the lead, lay the copper clad beneath the drill, and jog the drill down to it, leaving it a little short. The wire going to the pin is soldered to a square of copper clad, nicely polished (thickness 1.55mm). In practice the 0v lead is not required becasue the mill/lathe is earthed anyway. ![]() I have a small jack plug which I can plug into my control box. This means that a 0v signal on the pin will activate it. The way I use mine is as follows - bear in mind that the inputs to my computer are direct to LPT1. To do this you need a lead from pin, and a +5 or 0v lead to your detector. A signal on this pin (whichever you allocate) will stop the axis moving. ![]() The input into Mach 3 that you use is the "probe". No doubt a few others have ready made programs for this. I'll start you off with the few of the basics, so you undertsand where you are coming from.
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