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SmoothStepper USB / Ess and cnc4pc npn prox wiring.
« on: November 20, 2013, 06:30:36 PM »
Hello. I have an ess and a c25 bob. I have some npn prox switches. These switches run off 12v. I understand that im supposed to put a 10k resistor from +12v to signal pin to pull it high according to the c25 docs. My concern is that this puts +12v to the pin. Am i missing something? I thought you could only put 5v to an input pin. I though the 10k resistor was supposed to cut 12v to 5v but when i test from the resistor to ground i still get 12.31v. Can you shed any light on this?