cr0sh:
JimboZA:
An Arduino is dead until you load a sketch into it....Not sure about clones, but I'm pretty sure that stock official UNO's come with the blink sketch pre-loaded, that blinks the LED on pin 13...
That's interesting, and makes sense as an out-the-box test. But when we got ours a year ago I didn't read that anywhere. Nor did I notice the LED blinking, not that I would have been looking....