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General Mach Discussion / Re: Can you wire a proximity sensor directly to a motion control board like a pokeys
« on: March 02, 2019, 07:14:12 AM »
Hi, found this old post. Hope that it is okay to post here. I am looking to install proximity NPN switches too with my PoKeys57cnc board. I am not an electrical engineer. I understand from this thread, that I have to wire a pull down resistor between the sensor and the keys57 board, but in this manual https://www.poscope.com/wp-content/uploads/downloads/Pokeys/LibrariesAndPlugins/Mach4%20and%20PoKeys57CNC%20-%20step%20by%20step%20guide.pdf page 15 it just sounds like you can connect the switch directly, but they mention an built in pull up resistor. So i am kind of confused here. I would of course like to do the right thing, so that I don't blow up my keys57 board.