# keep getting: avrdude:stk500\_get sync():not in sync: resp=0

**URL:** <https://community.sparkfun.com/t/keep-getting-avrdude-stk500-get-sync-not-in-sync-resp-0/23315>\
**Category:** Arduino\
**Created:** [February 10, 2012, 5:14am UTC](https://community.sparkfun.com/t/keep-getting-avrdude-stk500-get-sync-not-in-sync-resp-0/23315 "2012-02-10T05:14:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![potoole](https://avatars.discourse-cdn.com/v4/letter/p/b2d939/32.png) [@potoole](https://community.sparkfun.com/u/potoole)\
**Post date:** [February 10, 2012, 5:14am UTC](https://community.sparkfun.com/t/keep-getting-avrdude-stk500-get-sync-not-in-sync-resp-0/23315/1 "2012-02-10T05:14:15Z")

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keep getting: avrdude:stk500\_get sync():not in sync: resp=0.00

Trying to upload sketchs to Sparkfun Arduino pro using sparkfun FTDI basic breakout board.

I’ve gone thru the arduino troubleshooting suggestions.

Arduino Troubleshooting for avrdude: stk500\_get sync():not in sync, etc

1. Make sure you have the right item selected in the Tools \> Board menu. yep :o

2. check that the proper port is selected in the Tools \> Serial Port (done so) :?

3)check if the drivers for your board are installed correctly is by opening the Tools \> Serial Port menu in the Arduino software with the Arduino board connected to your computer (have done so, many times) :?

1. Physical Connections

First make sure your board is on (the green LED is on) and connected to the computer. etc, etc (checked all)

Make sure there’s a bootloader burned on your Arduino board. To check, reset the board. The built-in L LED (which is connected to pin 13) should blink. If it doesn’t, there may not be a bootloader on your board. (yep, it blinks)

I’ve gone thru the whole troublshooting list, to no avail. And have followed suggestions by others who have had the same problem.

**There seems to be no answer to this problem. Does anybody know what causes it?  
 :x :evil:** potoole

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**Author:** ![clive.mainland](https://avatars.discourse-cdn.com/v4/letter/c/3bc359/32.png) [@clive.mainland](https://community.sparkfun.com/u/clive.mainland)\
**Post date:** [April 6, 2012, 5:59am UTC](https://community.sparkfun.com/t/keep-getting-avrdude-stk500-get-sync-not-in-sync-resp-0/23315/2 "2012-04-06T05:59:14Z")

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I get that message when I try to upload while there is something else connected to the RX or TX pins. Unplug the wires on pins 0 - 1 before uploaading and it works ok.

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**Author:** ![djmanning](https://avatars.discourse-cdn.com/v4/letter/d/f19dbf/32.png) [@djmanning](https://community.sparkfun.com/u/djmanning)\
**Post date:** [April 7, 2012, 8:25pm UTC](https://community.sparkfun.com/t/keep-getting-avrdude-stk500-get-sync-not-in-sync-resp-0/23315/3 "2012-04-07T20:25:52Z")

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I had a similar error with a pro mini. I was using USB power only during programming. As soon as I added a separate 5v source to the board, the problem went away.