Fancy battery level indicator
Added 2022-12-08 04:30:13 +0000 UTCHaving featured the version based on op-amps I thought it would be interesting to get a version with a microcontroller.
One of the main advantages of this unit is that it can be set for different numbers of lithium cells, from 1 to 8. That's all done by solder links on a chain of resistors in the divider. The microcontroller only sees the same voltage range each time.
https://www.youtube.com/watch?v=D0v6DaVa20s
Comments
There is a spare pin and they could have flashed the outline.
Big Clive
2022-12-09 05:54:49 +0000 UTCIt's strange some manufacturers go out of their way to remove every part possible. Then there is something like this where seven of the parts won't be used but they provide them anyway.
Nani Isobel
2022-12-08 19:47:47 +0000 UTCNice and compact! They might have used filtering to add a ballistic effect or to reduce flicker. Hysteresis works better on the latter, but both together may be optimal. Flashing for overvoltage might be confused with the more common convention of flashing for flat battery. I'd prefer a colour change myself. If they've a spare pin they could drive the red outline and maybe achieve a fairly unambiguous indication.
Mike Page
2022-12-08 19:36:49 +0000 UTC
