The Casio F-91W is a design classic. It’s inspired a few remixes since its release in 1989 (or more accurately, since hardware became cheap and small enough that home tinkerers could replace its innards with something more useful).
The latest maker to turn this classic timepiece into something with more functionality is Pegor, who has replaced the watch’s innards with a load of modern equipment, including a Texas Instruments CC2640 Arm Cortex-M3 chip.
Pegor’s watch is Bluetooth-capable, has a notification bar, lets the user know when they’ve got a text, and has a battery life of roughly 15 days.
It’s by no means finished – we came across this project because Pegor is burned out from working on it, and is looking for collaborators. If you think you can help, get in touch.