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Author Topic: Arduino Uno Problem Uploading  (Read 419 times)
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I cannot upload programs to my Arduino Uno Board. When I try, I get the following message:

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

I have restarted my computer, uninstalled and reinstalled the software, and updated the drivers.

Any suggestions?
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What operating system? Do you have anything plugged into the Uno apart from the USB cable?
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I just solved the issue. Whenever a pin is plugged into the Rx spot, it will not upload, but when unplugged it works just fine.
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