Just bought a new unit for a project in work but it will not work. As soon as I put power onto it, the L led next to pin 13 blinks constantly. it will not let me upload code now will it let me reset it by pressing the button. Does anyone know what this fault is and if I can resolve it? Cheers Dave …

Brand spanking new Uno will not work

system March 25, 2012, 7:33pm 4

In your software you might double check the tools/serial port , and CHECK the one that is listed

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