[CitizenOfDreams]

I don't think you need the C9 board for this. An NPN proximity switch already has the same exact circuit inside (an open-collector transistor). You can connect the proximity switch directly to the Hobby CNC board.

And your English is perfectly fine, don't worry about it. :wave:

[Rene Nuñez Paz]

I don't think you need the C9 board for this. An NPN proximity switch already has the same exact circuit inside (an open-collector transistor). You can connect the proximity switch directly to the Hobby CNC board.

And your English is perfectly fine, don't worry about it. :wave:

Thanks!!!
Today I found the Relay info. Search for Relay in all HD and finally I found it!!
Think that I bought it around 10-11 years ago.

Thanks for the info,
Then the relay will remain in the drawer for next ocassion
I will build a circuit with LM317 and 2R for get around 5v o little less
and connect it to Input pin. I will be careful to dont fry the controller...

Many thanks again.