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Author Topic: Not reseting/ fuse broken  (Read 239 times)
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Hi,

I stupidly put too much current through my Arduino Micro by hooking up a 9V battery to 5V instead of Vin. When I plug it in, the blue light goes on so it still has power but the serial port is not reading it. The reset button also doesn't work. Is there another way I can rest it or is it a goner? smiley-sad
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texas
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It's likely a goner, not just the mega chip either.  Sorry.
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Experience, it's what you get when you were expecting something else.

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Did you see any Magic Smoke™ escape?
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Replacement for the Arduino IDE: UECIDE - Proper serial terminal, graphing facilities, plugins, overhauled internals.
Java isn't bad in itself, but it has enabled morons to write programs.

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You won't always see smoke.
Applying 9V to parts with absolute max of 6V for Vcc will damage them.
The power LED is likely rated for 20mA, I think it has 1K current limit resistor. With 5V, likely sees ~ 2mA, with 9V maybe 6mA, so that part won't fry.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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Talk about 'luck of the draw'.  In another thread someone connected the +/- pins on his motor board back to the Arduino not realizing they were unregulated and connected to a 12V/8A supply. He reports that though it killed his USB to his computer and his monitor wouldn't work, the Arudino survived.  

He knew pretty quick something was wrong and unplugged it.  How long did you have your setup engaged?
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Valencia, Spain
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He knew pretty quick something was wrong and unplugged it.  How long did you have your setup engaged?

Components can die in the blink of an eye.

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