I was working with my arduino with several Servo's and forgot to connect the GND of arduino with the GND of the Servo's. The arduino stopped working and does not connect to the computer anymore.
When I plug it in the USB port, I don't hear the bleep it normally does. The lights on the arduino are on, but the arduino doesn't appear anymore in the computer itself and doesn't interact with the IDE. Reset button doesn't work. It doesn't appear in the COM selection either. I've tried it on several computers.
As i suggest, the chip might have gone out of work due to that common ground sharing problem.
I had my freeduino destroyed the same way, either no common sharing or some power fluctuation.
But since UNO is a DIP packaged board, you can have a change of the BOOTLOADED ic with a new one with bootloader in it.
DrAzzy:
Does the reset button trigger the sets of 3 fast blinks from optiboot (indicating the chip is still running)?
I would not expect that to damage the chip, only to result in the servos not working since they didn't share a common ground.
Is everything else disconnected from the board?
When I click the reset button I get one set of 3 fast blinks on the arduino. I have everything disconnected from the board. It is only the board that I'm plugging in...
Quick update: The last sketch was one with servos. I connected a servomotor to the broken arduino and the servo motor started turning, like it's supposed in the sketch. It just doesn't connect to the computer anymore. Does anyone have the solution?
Yeah, found it. I've tried the Loopback, but it doesn't react at all... No sound from the computer and still no connection with the arduino. Can't find it in device manager either..
