Hi everyone I'm new here, so could you give me some help? I wrote a large sketch, which really works. But since today when I want to upload the sketch it compiles and starts then to upload but never ends and the Arduino don't blink. If I do the same with my Arduino Uno SMD, it works perfectly. T…

Endless upload with Mega 2560

nickgammon May 18, 2012, 10:18pm 2

Do you get any messages at all?

Does your sketch have "!!!" in it (eg. in: "All done!!!")?