Pimping My Casio: Part Deux (blog.jgc.org)

TSA: "Sir, are you wearing the terrorist watch?"

You: "no no, it's a modified terrorist watch, it now has more features!"

https://www.spiegel.de/international/world/al-qaida-s-watch-...

https://www.watchesofespionage.com/blogs/woe-dispatch/casio-...

What's the process of adding sensors to the custom motherboard? Based on your watchface config it looks like you added accelerometer. I wonder what other sensors are easy to add. I'd love to have an hrm in mine

This is a brill project

Very cool! What's the expected battery run time?

is any Linux version? I'm not using brew

I have been reluctantly holding off hoping they will come out with a dot matrix or epaper screen. Neither will probably ever happen but I can dream.

> Since I bought the optional accelerometer add on it's necessary to put in place a little piece of caption tape

This should be _Kapton Tape_ https://croylek.com/pages/kapton-tape?srsltid=AfmBOoqVfkbfaW...

Admittedly my watch only gets 1/50 the battery life and doesn't pick up WWV. On the other hand, being able to redesign its face in Emacs and Illustrator and update it OTA makes up for a lot. So does not having to wear a molded polymer bracelet - those things are awful!

This, is how to enjoy your retirement. Hope we see lots of other fun projects like this from you John, a very enjoyable read. :)

> git clone --recurse-submodules [...]

Small improvement but it should get the clone and the submodules at the same time.

Respect.

Clicked on this thinking it was about a calculator, so impressed that it was about swapping out the guts of an casio watch and building and uploading the firmware.

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Reminds me of the Texas Instrument Chronos, which was a watch that existed solely to promote the MSP430. I think it was released around 2013. Looks like it's no longer in production, but you can find them used around $40.

very cool. casio would make killing building fitness band with 3-4 week battery life in the form factor of f91w. cheap fitness bands are basically already the mass smart watches of our era.

I really like that USB port. It can probably be made to work in both directions (like USB-C). Does it require a special PCB thickness that is hard to come by?

Was there ever a version of this that would run a full blown DOS?

I have wanted this for forever. My dream watch is the F91-W, but with weather as well. I cannot wait to try this out.

I may have gotten a dud, but the sensor watch pro board Unused had a _really_ bad crystal oscillator. Like, slow by over 30 seconds a day. There is the oscillator fine tune complication but the oscillator I had was way beyond the max adjustment range (32k ppm). Maybe it was just luck of the draw and I should give it another shot but having a clock that needed to be adjusted every few days was unusable.

Got mine yesterday after some back and forth with customs who had difficulties to understand what this is.

Love it so far. I'm really impressed by how simple it is to compile new firmware. It even keeps settings between firmware updates!

I think this watch is the right balance between smart and dumb. No distractions and connected features. But supports virtually any offline feature you can think of.