So I hooked up my project for a quick test of the display to my bikes power- worked great for a 20 second test (just running through the numbers on my 7-seg display) .
Was happy with the results so I unplugged it all and went inside. Go to plug my arduino into the computer- nothing. power led is on, green usb led is, and yellow tx led is on- all just solid... but nothing happens... computer doesn't see it at all.
I pick it up to see if the plug is not seated well- and HOLY crap the 32u4 is scorching hot...
What happened? Is this toast?
EDIT- im only posting this because the spec says the limit is 20 volts-http://arduino.cc/en/Main/ArduinoBoardMicro
I am 99% positive that i didn't even exceed 12.5volts- i never had the bike even turned on (When i know it throws 14.1 or so) - and if i did exceed 12 volts- it wasn't for more than half a minute...
I suppose I just need to invest in some of these https://www.sparkfun.com/products/107
or similar (maybe this http://www.radioshack.com/product/index.jsp?productId=12669026&filterName=Category&numProdsPerPage=60
I apologize I am total newb at this- feel like I got into this stuff on the wrong angle... i can program but Im really just learning the electrical stuff...