Goodwatch Update

### Open-Source Hardware Hacking on Wristwear At 00:00, hardware hacker Travis Goodspeed delivers an entertaining update on the GoodWatch project at the Wireless Village. Goodspeed introduces the project as an open-source, programmable wristwatch engineered inside a classic Casio CA-53W calculator watch housing.

### Hardware Architecture: Texas Instruments CC430 At 07:43, Goodspeed describes the internal hardware retrofitting. By designing a custom replacement printed circuit board (PCB) powered by a Texas Instruments CC430 microcontroller, the watch combines an MSP430 processor core with an integrated Sub-1 GHz RF transceiver while utilizing the original LCD and keypad.

### Modular C Application Architecture At 15:51, the presentation explores the firmware architecture. Goodspeed explains that watch features—ranging from countdown timers and world clocks to packet sniffers—are structured as independent modular C applications, allowing hobbyists to develop custom firmware modules.

### Sub-GHz Wireless Manipulation from the Wrist At 23:54, Goodspeed demonstrates the wireless capabilities of the watch. Using the 16-key calculator keypad, he demonstrates capturing, demodulating, and transmitting Sub-GHz radio packets (around 315 and 433 MHz), triggering remote wireless relays and testing paging network protocols directly from his wrist.

### Community Contributions and Open Hardware Tradition Concluding between 30:00 and 33:02, Goodspeed reviews open-source schematics, manufacturing tips for soldering miniature components, and highlights ongoing community contributions expanding the GoodWatch platform.

(AI summary — Gemini Flash)