I'm using Windows 7 and an Arduino Uno. I have the latest driver, the right serial port and the right board selected. I have connected a lego-motor to the arduino and uploaded the sketch to make it run. It worked perfectly. Then I added a second lego-motor, updated the sketch and wanted to upload…

Error: avrdude: stk500_getsync(): not in sync: resp=0x00

system September 25, 2012, 1:44am 2

What kind of troubleshooting equipment do you have (i.e. Spare Arduino, DMM, USBTiny, etc)?

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