Hello,
I am new to Arduino, but am fairly well versed when it comes to computer stuff.
I just purchased a brand new Arduino Mega 2560. I am however suspicious as to whether this board is actually brand new.
When I plug it into the USB port, the green light turns on but the LED connected to pin 13 flashes. Is this normal on a brand new board? I am suspicious because it is behaving somewhat like someone has loaded the blink led demo before me.
I am also having no luck trying to get any program uploaded. I have attempted the install procedure, but the problems start when I open the device manager on Windows XP. I have tried two different Windows XP computers. The instructions suggest that I should see some Arduino devices in the Ports section - I don't.
I however get and unknown USB device under the 'Other Device' when I plug in the board.
When I start up the arduino.exe, the only port I see under Tools -> Serial Port is Com 1.
I have selected Tools -> Board -> Arduino 2560.
I have tried different USB cables - I get the same thing.
I am not sure what else I might do. Might the USB chip (the atmega8u2) have been reprogrammed and this is the source of the USB connect problems?
Any help would be much appreciated.
Thanks.