If you want to relax some constraints, I made something similar for $10: https://www.stavros.io/posts/i-made-a-voice-note-taker/

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CurleighBraces 3 hours ago | parent [-]

Did you have any luck with the power issues on the new board?

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stavros 3 hours ago | parent [-]

The new board hasn't come yet, but a friend gave me a great idea, to power the mic from a GPIO, which powers it off completely when the ESP is off.

Hopefully the new boards will be here soon, but another issue is that I don't really have anything that can measure microamp consumption, so any testing takes days of waiting for the battery to run down :(

I do think these clones are the issue, though. They had a LED I couldn't turn off, so they'd literally shine forever. They don't seem engineered for low quiescent current, so fingers crossed with the new ones.

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CurleighBraces 2 hours ago | parent [-]

Makes a lot of sense :) thanks for the update.

I'll try to remember to creepy stalk you for updates as the device sounds great!

	▲	stavros 2 hours ago \| parent [-]
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