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Topic: avrdude:stk500:_getsync():not in sync: (Read 4 times) previous topic - next topic


Hi I'm running 2 boards a USB Droid which works fine with the robot I've built and other projects and a UNO which recently started showing the following message - avrdude: stk500_get sync(): not in sync: resp = 0x00 ....... I'm able to choose the board Tools > Serial >com port 3 . verify & upload then the avrdude message is shown? The Blink code from examples won't upload either? none of the example code will upload at all, shows avrdude message every time. I'm running 1.0.2 (which is what I'm currently using) and have 1.0.1 still installed the problem persists with both versions if any one has experience with this sort of issue/can explain what's happening, help resolving this would be greatly apprieceated.


Have you tried the loopback test mentionned here http://arduino.cc/forum/index.php/topic,73748.0.html ?
What is the result ?
Is the led "L" blinking a few times when you reset your board ?


I started having this issue today after operating fine for the last week. Tried the loop back and that workd fine. but will not program the UNO 3.
My message is similar:
avrdude: stk500_getsync(): not in sync: resp=0x30

no tx or rx leds when upload is started
need help!


Nov 16, 2012, 04:04 am Last Edit: Nov 16, 2012, 04:18 am by elve96 Reason: 1
Hi thanks for the info, I tried the loop back instructions on the UNO I was having trouble with, nothing was echoed back via the serial monitor when testing the UNO also tested another board a USB DROID ( to check I was doing the test correctly) which worked fine. D13 LED does blink/flash a few times when reset is pressed after the test ie. jumpers removed,  From this do I draw the conclusion that the UNO is dead or is there something else that can be done to resolve this issue? 


I had this issue a couple of times and l it happened while unplugging and giving power to the arduino while other things plugged in.  I had to restart the computer this fixed it in both of my cases.

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