Pimping my Casio with Oddly Specific Objects' alternate motherboard and firmware
blog.jgc.org
blog.jgc.org
https://news.ycombinator.com/item?id=42887561
Previous submission (275 points by jgrahamc on Oct 15, 2022 | 48 comments):
https://news.ycombinator.com/item?id=33214607
Amusing comment on previous submission tying the two submissions together:
> I have an F-91W that I've modded ... by filling it up with olive oil with the purpose of making it water resistant to 1500?! meters. It is so cheap that I can wear it and not worry about destroying it.
But flashing firmware via USB on a Casio? That’s the kind of absurdly cool detail that makes me love hardware tinkering. It’s like giving your grandpa’s old pickup truck a Tesla battery but keeping the patina.
Huge props for keeping it open and hackable.
(NB Just did this)
im excited about the MEMS motion sensor addon - sleep tracking and step counts on an f91-w with year long battery would be wild