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Author Topic: Loop Back Test Failed  (Read 238 times)
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HK
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No Tone or any activity in device manager In windows Please help. smiley-confuse
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Peter.

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The last thing you did is where you should start looking.
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What Arduino do you have?
What have you tried?
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The way you have it in your schematic isn't the same as how you have it wired up!

HK
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I have arduino uno r3,  last time I connected it to my pc it can't detect in device manager I tried looptest posted here but no ssuccess pls help.
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Peter.

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