Hi, I was a happy owner of new arduino till I misconnected wires on the breadboard(so many tiny holes close by) and gave 12V to the analog in pin( at least that is what I think has happened). Atmeg got hot and since then, well nothing is same as before.
I would like to find out which part of my arduino is dead and replace it.
If I plug it to USB, pc gives it COM port as before, on diod goes solid and led 13 goes solid on. Reset button has no influence on these leds. If I try to send Blink sketch into it I get
Binary sketch size: 1,084 bytes (of a 32,256 byte maximum) C:\Users\kingbean\Desktop\arduino-1.0.5\hardware/tools/avr/bin/avrdude -CC:\Users\kingbean\Desktop\arduino-1.0.5\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -carduino -P\\.\COM1 -b115200 -D -Uflash:w:C:\Users\kingbean\AppData\Local\Temp\build6195023820293351526.tmp\Blink.cpp.hex:i avrdude: Version 5.11, compiled on Sep 2 2011 at 19:38:36 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/ Copyright (c) 2007-2009 Joerg Wunsch System wide configuration file is "C:\Users\kingbean\Desktop\arduino-1.0.5\hardware/tools/avr/etc/avrdude.conf" Using Port : \\.\COM1 Using Programmer : arduino Overriding Baud Rate : 115200 avrdude: Send: 0   avrdude: Send: 0   avrdude: Send: 0   avrdude: Recv: avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude done. Thank you.
I get three RX diod flashes while sending this code.
I did the loopback test and it is negative only RX with TX flash once together when I send some text.
From what I read around here and googled I suppose my USB communication chip is dead or its firmware is dead, or the Atmeg is dead.
To change the ATMEG seems to be the easiest. But is it enough to just put there new chip with bootloader physically or do I have do something more? Thank you