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  • it does not check if LCD is ON before draw calls? So if I change that I should notice improvement of battery usage?

    Wow, yes. That would be a big improvement. IMO way bigger than you would get from accelerometer.

    That post you linked - yes, you can turn accelerometer off, but since I figured out about the low power accelerometer mode it's now drawing 60uA not 4000uA so I figured that was a good enough improvement.

    Cool - you can definitely give that a try. On the watch I have rigged to a current sensor here, all with NRF.setConnectionInterval(200);:

    • Normal: 330uA
    • Power save (not moved for a while): 130uA - default poll interval is 800ms so is slower than your code
    • Your code without Bangle.accelWr(0x18,0b00000000); - 160uA
    • Your code complete - 110uA

    So assuming you're moving all the time that'll drop power usage by a third

    ... but that's witout the pizza timer. With it you may find it's dwarfed by other things.

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