Badge Talk
summary
A flexible PCB wristband becomes a functioning ePaper watch with a text adventure, USB mass storage and NFC time set built around a 32 bit STM MCU using almost every pin and 92% of flash. Power tuning yields 25 µA standby and ~3 mA active so a 40 mAh LiPo lasts about ten days. Puzzle progress shows as LED blinks and hidden case files appear via FAT table interception. Flexible ePaper proves fragile so a 3D printed case and many replaced screens are required.
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chapters (15)
- 0:00Introduction and inspiration
- 2:53Design goals and concept
- 5:23Hardware components overview
- 6:28Flexible PCB challenges
- 8:57Power management and battery choice
- 10:20ePaper display and flexibility issues
- 12:073D printed case development
- 13:11Firmware and software design
- 14:37Debugging real-time clock issues
- 15:41USB file system manipulation
- 17:07Game design and puzzles
- 18:50Gameplay mechanics and inspiration
- 20:16Post-talk resources and distribution
- 22:08Acknowledgments and thanks
- 22:52Q&A session
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