• 75 Posts
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Joined 2 years ago
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Cake day: August 22nd, 2023

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  • I don’t have a specific recommendation, but I believe the key words to search for these days are “Digital Audio Player”.

    I’ve been following the open hardware Tangara for a while, but they’re between production runs right now so you can’t buy from them (you might be able to build your own though, the design is all there)

    As a heads up, like so many other technologies the middle has fallen out of the market thanks to the proliferation of smart phones. You’ll be paying a lot for anything decent from what I’ve seen


  • One problem is many devices don’t have a proper BMS integrated into the charging circuit, that will cut power before the battery is below a critical threshold. Li-ion cells start to have problems below 3V, and often suffer permanent damage below 2.5V.

    This is a problem with rechargeable AAs too, though less common maybe? Many kids toys and cheap decorative lights will drain a AA to dead in my experience. I’ve had to reintroduce disposable batteries with the rule “no microcontroller, no rechargeable”