8) Hello every body,
10x for all answers 'till now... You are right, when the batteries are almost discharged, the leds will not light so it will be a useful sign.
Answer to the last question: I saw the latest Logitech mouse (and the first one that uses laser), and i liked the ideea of a battery indicator (it always bothers me when the mouse stops working suddenly, so i decided to "upgrade" it :wink: and mount a battery indicator :!: .
I tried to make this circuit with 3 transistors, but it didn't entirely worked... Any suggestions to use them???
Thanks ppl