Good Morning Doddy,

Thank you for all the info, however, as I am not very good in electronics, would it be easier to install an 8 channel Optocoupler as per Amazon Canada: “Elegoo CA-EL-SM-005”. This would only cost $12.86 and make for a nicer setup?

(https://www.amazon.ca/ELEGOO-Channel...id=11192166011).

From my understanding of the pictures, I would plug the micro switches to screw terminals and the Dupont connectors from the Developower board to the pins on the Optocoupler.

Could I have my micro switches as NC connected to the NC of the Optocoupler since it is a preferred position for security reasons?

Thanks,