[–] 5 points 1 month ago (2 children)

For data transfer to the display pixels, almost definitely every display uses some sort of multiplexing, but most display boards include a driver chip that does the multiplexing for you. There are a couple of persistent display techs (only send data when you want to change what is displayed) like e-ink, but there's also a LCD version that I think Sharp just released, that doesn't have e ink's slow update rate or persistence tendencies. Both are much more expensive than your $free.99 display.

Very cool that you got it working! I also found a disposed vape and ripped out the charging board with a display like that to monitor/charge some spare 18650 batteries I harvested. I hate that the standard vape is now disposable, Lotta good stuff in there!

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  • [–] 4 points 1 month ago (1 child)

    So another company is getting in on "back of phone detachable ereader" like xteink. I'm a big fan of my X3, but the act of having it attached to my phone is not great. Can't use the included folio case and have it attach to the phone. Once you do attach it, both sides of the brick have a delicate screen, so extra odds of smashy smashy. It's not great to use while attached to the phone, I just store it there and then remove it from the phone when I want to read. It would be more interesting to either go for extreme thinness, maybe only enough batter in the eink reader to last an hour, but it charges off the phone. Or just let the magnets attach it with the screen against the phone. Book doesn't seem like they're really doing anything interesting here, vs what xteink already does for less

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  • [–] 3 points 1 month ago (1 child)

    It's definitely surprising how many coffee shops that sell fancy coffee (fancy as in single estate beans in pour overs) will still absolutely destroy a green tea by pouring boiling water from the drip machine and then overstepping it.

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  • [–] 30 points 2 months ago (6 children)

    Lol I've got a esp32-p4 and I struggled to get the included example working. So. We're basically the same.

    It's a very impressive chip but Tomb Raider, wow that's fantastic

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