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Random 0x66 error writing to USB Boarduino
Moderators: adafruit_support_bill, adafruit

Random 0x66 error writing to USB Boarduino

by ubestbsteppin on Fri Jan 04, 2013 6:41 pm

My USB Boarduino started giving me an error while writing to it. Everything was working fine the first dozen or so times I uploaded my sketch, the next minute the Arduino IDE (1.0.1 and 0023) is reporting "avrdude: stk500_getsync(): not in sync: resp=0x66". The IDE says "done uploading" but the new code hasn't been uploaded. Any idea what is going on or what else I could try?
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Re: Random 0x66 error writing to USB Boarduino

by JD3 on Fri Jan 04, 2013 9:59 pm

I have the same problem - one minute it works, then it doesn't want to upload.

Then I look at the jumper by the reset switch - oops i have it set for external power not usb....

And you would not believe how many times I keep doing that......
That little black caterpillar you just stepped on will set you back a few bucks....
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Re: Random 0x66 error writing to USB Boarduino

by adafruit_support_bill on Sat Jan 05, 2013 7:22 am

Check the jumper as JD3 suggests. Also double check the COM port. They do get re-assigned sometimes - especially if you plug the cable into a different USB port.
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