5v and ground is causing my Uno to shut off or short

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hi everyone,

i saw there couple of other posts people talking connecting button turn on light.  place cable 5v -, once place grd +, uno shuts off.  causing this, doing see on tutorials.

i noise computer , see com disappear.

sounds shorting uno out.
would draw diagram showing wires connected.
or better, show picture.


Arduino Forum > Using Arduino > LEDs and Multiplexing > 5v and ground is causing my Uno to shut off or short


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