Computer no longer detecting Arduino Uno.
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Computer no longer detecting Arduino Uno.

by akadouri on Mon Feb 13, 2012 6:36 pm

I have an Arduino Uno that I purchased from http://www.adafruit.com/products/193/.
I got it 3 days ago and have been experimenting since then. Recently I went to try plug it into the computer and try something and my computer won't detect the Arudino. I tried a different usb cable, different ports, and a different computer. Also this region http://i40.tinypic.com/2vmsto8.jpg seems to get hot whenever I connect the board to a power source (either USB or 9V plug). The green light still turns on when I connect it, and the other built in LED turns on. The last program I was using had 12 and 13 on HIGH and they are still like that. Any ideas on how I could fix it/if I destroyed it?
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Re: Computer no longer detecting Arduino Uno.

by adafruit_support_bill on Mon Feb 13, 2012 7:18 pm

Can you be more specific about which component is getting hot? The small chip in the center of the area you indicate (marked LPFL) is the 3.3v regulator. Does it heat up with no other connections to the board?
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Re: Computer no longer detecting Arduino Uno.

by akadouri on Mon Feb 13, 2012 7:29 pm

The only thing connected to the board is the USB cable. To be more specific the black thing in the middle of the circle is what is getting hot. http://i43.tinypic.com/1zzhp2r.jpg
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Re: Computer no longer detecting Arduino Uno.

by akadouri on Mon Feb 13, 2012 8:02 pm

I also tried removing the ATMEGA328. It still gets hot.
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Re: Computer no longer detecting Arduino Uno.

by adafruit_support_bill on Tue Feb 14, 2012 5:58 am

Sounds you have something pulling too much current from the 3.3v regulator. If there is nothing connected to the 3.3v pin, then it must be something on the board itself. You can examine the board carefully for any stray wires or solder spatter.
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Re: Computer no longer detecting Arduino Uno.

by akadouri on Tue Feb 14, 2012 8:34 am

I don't see anything stray, no wires are connected, I tried putting a wire in 3.3v and seeing if something was stuck. Looked fine, still gets hot. Should I submit for an exchange or did I cause this?
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Re: Computer no longer detecting Arduino Uno.

by adafruit on Tue Feb 14, 2012 10:41 am

during your experimentation, what were you doing? it sounds like you may have put 5V or 9V into the 3.3V pin
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Re: Computer no longer detecting Arduino Uno.

by akadouri on Tue Feb 14, 2012 11:20 am

I may have when I was connecting an old RC car's wheels, instead of plugging it from 3.3 to ground. I didn't realize the Arduino was that delicate. I guess I'll have to buy another one. I knew once I smelled the burning I killed it.
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Re: Computer no longer detecting Arduino Uno.

by mtbf0 on Fri Feb 17, 2012 10:28 pm

this individual deserves a blue smoke badge. an arduino is a difficult beast to put down.
"i want to lead a dissipate existence, play scratchy records and enjoy my decline" - iggy pop, i need more
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