Hello, I was normally using my Arduino for small projects and samples. When I tried to connect again my arduino on the computer yesterday, the Arduino IDE wouldn't recognise the usb connection and I couldn't upload any program on the board. I tested the board on both Windows and Mac. The same pro…

Arduino UNO R3 Stopped working on windows/mac

nickgammon September 22, 2012, 4:30am 4

Have you installed the Rev3 device driver?

Arduino UNO REV3.inf

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