Community post
NFC Energy-Harvesting PCB Business Card with an MCU
Like most business cards, mine doesn’t have a battery. When it’s tapped against a phone, though, 21 LEDs start an animation, powered just by NFC.
Like most business cards, mine doesn’t have a battery. When it’s tapped against a phone, though, 21 LEDs start an animation, powered just by NFC. Source: wilsonharper.net (64 points, 6 comments) Hacker News discussion
