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  1. #1
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Current Activity: Viewing Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,932. Received thanks 361 times, giving thanks to others 8 times.
    That probe shouldn't need any inverting.

    As it stands, the G540 input pin must float/be pulled high (I couldn't find the exact details from a quick scan over the gecko site).
    Having the probe pull that input to 5V should be fine, as even if it's not opto-isolated a PP should be 5V tolerant.
    The probe will then simple switch it to ground when activated.
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  2. #2
    Thanks for the help m_c and I hope I can follow this.

    My Gecko input pin currently reads 12v, when I earth this pin to the Gecko it triggers Mach3’s LED correctly for my touch plate, so do I connect the touch probe output to the 12v input pin? And does the touch probe need to be on the same power supply as the Gecko for a common earth?

    Sorry if I sound a bit dumb but I’m better with the mechical stuff

    Cheers
    Ross

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