I bought a 4 channel optocoupler board and have the input connected to my inductive sensors, when I move something metallic in front of them the LED on the board lights up and the LED next to the motor pin lights up, I have gnd on the optocoupler board connected to endstop gnd and the input connected to relative *stop pin,

I have tried pullup and active low configuration on the pin but nothing seems to work.

Thanks.

@zapta from what I've seen the inductive probes have very good repeatability better than that of a microswitch in fact. These are going to be used as endstops on my printer, I have a smart effector but that's only as good as your endstops on a delta.

The opto board I suggested is rated to 3khz so it should be plenty fast enough, just dunno if it will work or how to wire it

@stephen6309 thanks for your response, while a relay is a good idea I was looking to do it in a solid state manner, I have my eyes on one of these optocoupler boards - https://a.aliexpress.com/_mqkSCJQ

Hi,

I am planning to use the omron TL-Q5MC2 (NPN NC) inductive sensors as endstops on my delta printer with a rev 1.03 duet 2 WiFi at 24V

I've read around multiple discussions with using Schottky diodes in series with the output pin but only on the context of the NO sensors. I've also seen people talking about using optocouplers.

What would work in my case?