satman49 wrote:

I am getting this error when I try to upload,   avrdude:stk500_getsync() :not in sync resp=0x89. Anybody know what that means and how to correct it? Ii compiles without error tho.I am assuming its sync problem from what the error says.

I have the same error, any suggestions?

thanks

I had the same problem yesterday, but with resp=0x00.  I understand this error can be caused by almost any communications problem, but for me, I had to revert to installing manually with an older version of avrdude:

http://www.soliforum.com/topic/5344/syn … rdude-511/

Other suggestions I found online didn't work for me, but might work for you:

- set the default baud rate of the port to 38400 (in system device hardware settings on Windows)
- make sure auto-reset jumper is present (next to pin 9 of chip in middle of board)
- manually press reset button just when compile completes
- (re)install the usb serial drivers

Personally, I found it incredibly frustrating that the Arduino IDE recompiles the code every time you upload.  Running avrdude from the command line was a lot faster way to try out different settings and setups.

I am getting this error when I try to upload,   avrdude:stk500_getsync() :not in sync resp=0x89. Anybody know what that means and how to correct it? Ii compiles without error tho.I am assuming its sync problem from what the error says.

I have the same error, any suggestions?

thanks

If you think about it, most Arduino projects will only have the USB power when being flashed.

http://www.solidoodle.com/how-to-2/how- … -firmware/ and

http://www.soliwiki.com/Updating_Solidoodle_Firmware

The first says to just have the usb only plugged in but the second doesn't say that.It does say:!!!!WARNING!!! Maintain a stable power connection, a UPS (Universal Power Supply) is best anytime you flash firmware to ensure stable power

Which is correct? LOL I dont want to make my SD3 a boat anchor.