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Topic: Mega 1280 won't program... sometimes (Read 485 times) previous topic - next topic

Blackrose

So. I have issues. Mega issues. And so does my Arduino.

So i am programming away making cool hacks and stuff, when all of a sudden BAM!
the Arduino stops letting me program it.

It builds fine, but when it goes to upload, the Rx light flashes 3 times and the Tx light does nothing. then i get the old faithful of errors:

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

Troubleshooting led me to unplug everything from it, use a fresh computer with a fresh version of the arduino IDE, and nothing worked.

I left it for a day in frustration, and then it worked! then i left it another day, and i have the same issue again.

Before it stopped working i was playing around with the Servodecode library.
(http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1228137503)

AND i was printing serial over a 115200 baud rate for the first time.

i am bummed and would hate to have to get another one.

My Stats:
Hardware: Arduino Mega 1280
Arduino IDE: v22
Computer:
Dell Mini 1012 Netbook
Windows 7 Ultimate

Blackrose

False alarm guys, i just smoked the micro.  apparently it protests to 12V logic.

i would still like to know the answer, but i won't be able to test any solutions till i switch out the 1280 chip.

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