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Topic: Can't upload to Arduino Mega 256 (Read 664 times) previous topic - next topic


i try  to  upload  program to arduino but  i can't .. the LED  L  is blinking rather rapidly - 5 times a second or more  HELP ME PLEASE!

and  when  i   reset    arduino... don't  happen  something .. continue  blinking  :(

avrdude: stk500v2_getsync(): timeout communicating with programmer
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
sry for my english!


It's difficult to diagnose this without more information.  Like your whole set-up.

For some reason, it sounds like your board is not responding.  Have you tried another USB cable?
Facts just don't care if you ignore them.


I have had that message after unplugging and re-plugging the Arduino while the IDE serial monitor is open. Try un-plugging &restarting the IDE. Seems the OS assigns a new COM port for the board and the IDE sticks with the old one ( can't reselect in menu either ).

I'm running windows 7 so this may be irrelevant to you.


Are you using the Arduino Software 1.0?
Try it with an older one.
There is a bug see

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