Home Switch Problem

[Kev2960]

Hi John, Im afraid I don't understand a word of what you've just said.....sorry!
Could explain please

[john swift]

Hi Kev
your micro switches are connected to your PC/Laptop printerport via opto isolators
(opto isolator part number EL817 - the terminal E goes to ground and C to the printer port input pin )

do you have a multi-meter to measure the voltage change at the printer port input pin when the switch is operated ?

how have you set up the switches in mach3's ports & pins ?
any thing like this -


John