I can run wires and solder, but I'm not an electronics whiz.... I'd like to use a bunch of new inductive proximity sensors that i picked as the limit switches on my prototype probotix driven (4 axis 400in/lbs version) cnc router. Can any one steer me toward a circuit that will convert the inductive sensor signal to the something the probotix board will see as a typical mechanical switch-- doing the same thing? I assume, since the limit switches are all ganged together in series, and the switches are normally closed, they must be dropping a voltage to 0 at some pin on an IC somewhere --until the circuit is breeched, or some other simple signalling approach... The inductive sensors have 3 wires typically as opposed to the mech switches with 2. How do you use inductive sensors on the hobby side? (serious hobby side...)