Hello, I am here again to ask for help that in this forum has always been good for me
I already installed the laser
Thank you
Now I am at the end of the race I have already done a thousand tests and I am not able to ride the end of the race I think I know position
red and black
but green I don't know where to connect



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Here is the diagram for the end stop board :-

thanks for reply
I know that green is a sign
what I do not know is where signal on plate mach3 interface board
or I don't know how to configure well



signal is pwm ?

The green wire will go into one of the inputs.  The green wire will be 0 or 5V depending on the switch state.

Then configure ports and pins, Input Signals, X Home to Port 1 pin 10 or which of the 5 inputs you have used, It will be one of the following 5 pins 10,11,12,13 or 15

You may need to tick the Active low too.

You also need to put the Black to ground (GND) or 0V and the Red wire to +5 Volt.

ok the final race issue is already solved

Thank you