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  1. 11-08-2015 #11
    HankMcSpank's Avatar
    Lives in London, United Kingdom.
    HankMcSpank
    Last Activity: 2 Weeks Ago Has been a member for 9-10 years. Has a total post count of 623. Received thanks 10 times, giving thanks to others 59 times.
    I have one of those relay boards (or at least one that looks remarkably like it) - I drive it directly with the 5V out from a CNCUSB Mk2/9 board digital output - no issues.

    I'd measure the DC resistance of your relay coil...I'd wager you can probably short out that output 100 Ohm resistor (which should then see sufficient current to energize the relay) ...else play on the safe side & put something like a 10 ohm resistor across it (i.e. in parallel with it)
    Last edited by HankMcSpank; 11-08-2015 at 09:03 PM.
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