joeycastillo/Sensor-Watch
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A board replacement for the classic Casio F-91W wristwatch
15 mentions on Hacker News by 12 people: 3 stories, 12 comments · first 2021-08-08 · latest 2025-10-14
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There is also https://github.com/joeycastillo/Sensor-Watch
comment by kristianpaul · 2025-10-14 · in Modifying a Casio F-Series Digital Watch (2020) -
…open source alternatives for those who aren't trying to fw a proprietary app/closed source system. https://github.com/joeycastillo/Sensor-Watch https://github.com/PegorK/F91_Kepler
comment by thot_experiment · 2025-09-14 · in Ollee Watch: Turn your classic Casio watch into a smartwatch -
…on the sensor part here: https://www.sensorwatch.net/docs/sensorboards/ and reference designs here: https://github.com/joeycastillo/Sensor-Watch/tree/main/PCB/S...
comment by jgrahamc · 2025-07-19 · in Pimping My Casio: Part Deux -
…thing. For an example, see this code in the astrolib port used by SensorWatch’s “movement” project: https://github.com/joeycastillo/Sensor-Watch/blob/e8f31beb70...
comment by gorgoiler · 2024-10-16 · in The Sundial Cannon of Åtvidaberg (2017) -
…have a little buzzer and the standard SensorWatch codebase has a modem that uses it to send data: https://github.com/joeycastillo/Sensor-Watch/blob/0ad5fa4733...
comment by gorgoiler · 2024-08-22 · in Designing my own watch (2020) -
…someone has sent a pull request for it! Unfortunately it was rejected due to trademark concerns. https://github.com/joeycastillo/Sensor-Watch/pull/102 The sensor watch board is not being fully emulated either. The code is compiled to WASM…
comment by matheusmoreira · 2024-07-28 · in TOTP tokens on my wrist with the smartest dumb watch -
…= { CREDENTIAL(2F, "JBSWY3DPEHPK3PXP", SHA1, 30), CREDENTIAL(AC, "JBSWY3DPEHPK3PXP", SHA1, 30), }; https://github.com/joeycastillo/Sensor-Watch/blob/main/movem... I also added user calibration to the pulsometer in order to allow it to be…
comment by matheusmoreira · 2024-07-27 · in TOTP tokens on my wrist with the smartest dumb watch -
…? it's beat watch face seems to be set to whatever timezone you configure which defaults to UTC : https://github.com/joeycastillo/Sensor-Watch/blob/main/movem...
comment by slim · 2024-04-15 · in Swatch Internet Time -
…to be the only example in this no man’s land. Over 365 days on a single coin cell battery so far. https://github.com/joeycastillo/Sensor-Watch
comment by guidoism · 2023-05-08 · in Casio adds fitness features to original G-Shock digital watch -
Sensorwatch has a watch face with iso8601 weeknumber (which I did) https://github.com/joeycastillo/Sensor-Watch/blob/main/movem...
comment by slim · 2023-03-02 · in Europe pushing for lunar time zone -
…the sensor watch load TOTP secrets from an Aegis export (essentially just a bunch of TOTP URIs): https://github.com/joeycastillo/Sensor-Watch/pull/95 This is the reason I bought the board. It makes me happy not having to use my phone for…
comment by wryun · 2022-10-18 · in TOTP tokens on my wrist with the smartest dumb watch -
Or this one: https://github.com/joeycastillo/Sensor-Watch
comment by yyx · 2021-09-22 · in More Casio Watch Mods