Can someone tell me why I get the following when I try to program my UNO. AVRDUDE: STK500_GETSYNC(): NOT IN SYNC: Yesp = 0x00
Which OS are you using?
Windows 7
Have you installed the drivers? http://arduino.cc/en/Guide/Windows#toc4
Yes I have been using this device for 6 months and uploaded multipule programs with absolutely not problems. All of a sudden I start gettimg this error and nothing seems to work to fix it. I do notice that the 'Getsync()' part of the error is a function from some software package but I cannot locate it.
You may find that the COM port has disappeared or is not functioning correctly. Check to see if Device Manager shows the COM port. If it does, try unplugging the Arduino, removing the device and then plug in the Arduino again. It should reinstall the device.
The other possibility is that it is looking for the Arduino on a different port. This can happen if you have unplugged the Arduino and then it in to a different USB port.
Pete
The message means that AVRDUDE, the software that uploads your sketch to the board, can't communicate with it.
Also check you have the correct board type selected.