MicroPython Forum (Archive)

Thanx chuckbook for your trouble! So the 3 V provided by CR2032 is enough (could not find info on VBAT acceptable voltage range)? I don't need RTC, so how do I turn it off as this prolongs battery life? I only need VBAT for saving counter value when power is down.

That sounds good! Would a CR-2032 battery suffice? How long would that last?

For various reasons I'd rather save the data only on power down. Can VBAT somehow be used for this?

I'm making a odometer for a tractor which reads pulses from the axle. When the tractor is shutdown the pulsecount would have to be stored so the total distance reading is not lost. I don't want to write the pulsecount everytime it changes as the pulse rate is high. How could I store the pulsecount a...