[Mr V]

It all depends on exactly what you want to do.

If all you want to accomplish is turn on the led(s) the simplest and in my opinion the best way to do it would be as Mr Forbes said. The caveats are to add the appropriate resistor(s) if using individual led(s) and make sure that the switch you are using is rated for the current it will carry. If using the common 3 terminal limit switch you want to connect to the C and NO terminals if you want the led(s) to turn on when the switch is pressed. If you want them to be off when the switch is pressed use the C and NC terminals. You could also set it up to do both by connecting the power source to the C terminal, one color say red to the NC terminal and another color say green to the NO terminal. That way the red would be illuminated when the switched is not pressed and green when it is pressed.


Now if you want to, for example to stop your lift motor when it reaches the and turn on the led then you would want to wire it to the Roborio. For that you would connect the C and NO terminal to a signal and ground DIO terminal. You would then want to connect a Spike to a relay port on the RoboRio and the led(s) to the Spike.