I have a hobbyCNC board. It is supposed to have pullup resistors on the input pins. I have my limit switches wired in series and when I use the auto configure in Mach3, it sees each switch as it is tripped. If I leave the switches in the config, Mach3 says a limit switch is tripped as soon as I turn it on.
What to do?
I am thinking I need to add an additional resistor.