I'm thinking of running my Duemillnove and display off a 7.4V LiPo battery and I want to shut down when the battery is at its safe operating minimum voltage.
Can I use one of the analogue inputs or does this get effected by the supply voltage ? Does the regulator drop out and the ADC then follow the supply voltage ie 10 bits of Vsupply not 10 bits of 5V ? :(
I looked around but didn't turn up any leads on this any ideas ?