So, while I was playing with LED’s, I accidentally shorted the 5V supply (not I/O, but the 5V pin) to ground. The LED died, but my arduino is also acting weird. I’m having trouble getting windows to recognize the arduino (unrecognized usb device). If I tap the arduino, the amber LED sometimes turns off, tap it again it turns back on.
Is it dead?
I read this in another forum post, but I dont’ know if it applies to my Arduino Uno (R1).
If using external power either via the arduino board’s external power connector or the shield Vin pin, the results of a short circuit on the Arduino +5vdc bus would be that the on-board +5vdc voltage regulator will go into self protection mode and turn off the +5vdc bus until the short circuit is removed.