This summer I've made indoor (no direct sunlight) solar powered kitchen timer and I used STM32L011, it's winter and it's still working and voltage is stable. The power consumption is 100-150uA (28uA for display, 80uA for mcu, the rest is 1.2-to-3V boost). But it's only on when I cook (maybe 1h a day).

https://imgur.com/a/ME1tx2c

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picture 5 days ago | parent [-]

Very cool. Though it's unfortunate that most DIY electronics projects end up looking like IEDs, mine included

	▲	lazide 5 days ago \| parent \| next [-]
		Well, IEDs are certainly a type of DIY electronics project? If they weren’t improvised, they’d be factory explosives devices (FEDs) after all?
	▲	Scoundreller 4 days ago \| parent \| prev [-]
		Haha, the main meshtastic discord has a #notabomb channel for those sharing their DIY builds