Anyone got any ideas how to implement "powered on/run time" in a 1 wire network? All I need is the amount of hours and minutes it's running, in fact it can be just one device that I time as it's going in a car and if powered off the car battery it wouldn't be active anyway when the circuit is off
I did find a DS1904 which LOOKS like it might be able to do the job even if I just turn it's clock on when I want the time measurment to start, and off when finished, but it's a 1 button device and cant see it availabe in the uk as of yet
Any other ideas or suggestions?