I received an ardx arduino experimenters kit (arduino uno and kool toys)
for Christmas. It worked fine and I spent part of a
day on 4 projects. This morning when I went to download a new program to
the processor I got a port not found error before I noticed that the green
power led was not on. I restarted my Imac and tried plugging the usb cord
into my ibook, but the arduino never showed. My ipod turns up fine on the
same usb port. I plugged the 9 volt battery power supply in and the power
light came on I tried connecting again via usb and no luck. Then I noticed
that the power light was off again and the battery was very warm.
Unplugging and replugging the battery results in the power led coming on for
about a minute before turning off. I assume this is the arduino/power
system protecting itself. Is there anything else I should try?