NFC Energy-Harvesting PCB Business Card with an MCU
A battery-free business card that lights 21 LEDs from a phone tap
Startup & Business18d ago
- Category
- Startup & Business
- Website
- wilsonharper.net
- Language
- English
- Listed
- 18d ago
A PCB business card with no battery: hold it against a smartphone and the NFC field alone harvests enough energy to wake a microcontroller and run an animation across 21 LEDs. The project covers the RF energy-harvesting design, the MCU that drives it, and the board layout that fits everything into card size.
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