jmjcoke

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  • June 30, 2015 at 12:15 pm in reply to: USB cable melting and catching on fire. #7908
    jmjcoke
    Member

    Yes I have a spindle drive connected to the PWM.

    June 30, 2015 at 12:08 pm in reply to: USB cable melting and catching on fire. #7907
    jmjcoke
    Member

    Between the metal shield around the USB port on the tinyg and the shield of the cable plugged into my computer tower had 12V with the cable unplugged. What lead me to check that was the sparks that happened when I tried to plug the usb extension cable into tinyg.
    I ordered a new Tinyg and will use a single 24V 8A PS.The other cards are working fine, I disconnected tinyg and installed smoothieboard to the exact wiring as the tinyg, it is running right now on the series PS. I am not saying it is a tinyg “problem”, just that you had said there has been weirdness with this setup before, and as much as I like spending $160 2 times in one week, others might not.

    June 30, 2015 at 9:13 am in reply to: USB cable melting and catching on fire. #7904
    jmjcoke
    Member

    I am using 2 12V power supplies wired in series, I have made sure they are isolated from ground and they have worked on three different boards
    1. Rambo
    3. Azteeg X3 Pro
    4. Uberclock Smoothieboard

    I did find that there was voltage between the usb cable outer metal plug and the outer metal surrounding the usb on tinyg (12v).
    The board is toast so I will get another and use a regular 24v PS.
    Someone please add this tinyg dislike of series PS to the wiki because if this had taken out my main computer with $5K of software, the tears would flow, and we don’t need that.

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