I bought the latest Arduino-Uno board last week, read all the related information from the web and some from the book/magazine. I then downloaded the IDE 1.0.5 from Arduino and installed it in my Windows XP PC. Everything is is a smooth ride and I have a relatively good idea where I am and where I should go to.
However I have one question (actually more than one, but I post the others later as they do not belong to the same topic). I notice that the yellow LED blinks in 1 second frequency as soon as I power the board (by USB connection) even before I have uploaded any sketch. Is this normal? Yes, I do mean the the yellow LED, not the power LED (which is green) and not the Tx and Rx LEDs (which I know their purposes),
Any feedback are appreciated.