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Replying to @MakeAugusta

Power constraints are the thing. I can fit maybe 11 mAh of battery into this gadget. The two chips I’d like to use for this can sleep at 0.5~3µA, which is weeks to months in standby. RP2040 is great, but dormant mode only gets down to 180 µA; even asleep it’d drain in a few days.

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