Different use case (environmental data recorder) but our current product uses an STM that turns on an ESP32 (not trusting that sleep mode) when it needs radio, to run on 2 AAs forever.
replyDo you have any info you can share on this recorder? Sounds really interesting!
replyhttp://supermechanical.com/pickup
Been in production hell thanks to tariffs (wrote a lot about it) but should ship by summer.
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