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  1. 21-03-2017 #7
    john swift's Avatar
    Lives in merseyside, United Kingdom.
    john swift
    Last Activity: 18-01-2021 Has been a member for 9-10 years. Has a total post count of 257. Received thanks 53 times, giving thanks to others 0 times.
    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 -
    Click image for larger version.  Name: mach3 home switch config.jpg  Views: 895  Size: 66.2 KB  ID: 21210

    John
    Last edited by john swift; 21-03-2017 at 11:33 PM.
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