Electronics > Open Source Hardware
DIY watch based on the Casio F-91W
Lukas:
Hi There,
I used to own the ez430 Chronos programmable watch, but after several years, the wrist strap disintegrated. Since I can't live without a watch with binary time display, I made my own based on the case of the famous Casio F-91W. It's called "pluto": https://github.com/carrotIndustries/pluto
Features:
Displays time in decimal/binary/hexadecimal base
Multiple alarms
Multiple countdown timers
Uses RTTTL ringtones for alarm sound
Stopwatch
Compass (WIP)
Generation of time-based one-time passwords according to RFC 6238 (WIP)
Menu-driven interface
Infrared receiver for software updates and TOTP secret transfer (WIP)
Useless customisation (Key beep frequency, etc.)
approx. 1 year battery life (estimate based on current consumption)
Lukas
bitwelder:
Awesome project! :-+
Thanks for sharing it.
kripton2035:
yes pretty amazing to hack an old watch like this. awesome !
ptr:
very impressive work!
I really like your software. you even made a simulator.
very extensive feature set!
I have just triggered a pcb order at elecrow.
I'm kean to edit the pcb and add a pressure sensor to get even more smart readings from it.
would be a nice feature to watch the weather.
are you working already on an bootloader / update implementation?
Lukas:
--- Quote from: ptr on June 08, 2016, 09:51:43 am ---very impressive work!
I really like your software. you even made a simulator.
very extensive feature set!
I have just triggered a pcb order at elecrow.
I'm kean to edit the pcb and add a pressure sensor to get even more smart readings from it.
would be a nice feature to watch the weather.
are you working already on an bootloader / update implementation?
--- End quote ---
We're working on getting the the IR receiver running for firmware updates and loading OTP secrets. Don't have too high expectations, firmware updates will take several minutes since the IR receiver only does 1kBit/sec.
I'm not sure whether a pressure sensor will work through the rubber gasket. Also take a look at the "mech" directory, there's an inkscape document for verifying that all components fit inside the plastic frame.
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