NFC Energy-Harvesting PCB Business Card with an MCU

A battery-free PCB business card powered by NFC to animate LEDs using an embedded microcontroller.

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4 ratings3.83

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CategoryDeveloper Tools

PlatformWeb

PricingFree

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An independently developed hardware project creating a credit-card-sized PCB business card that uses NFC energy harvesting to power an MCU and animate LEDs without a battery. The card integrates NFC chip harvesting capability, a microcontroller for LED animations, and a custom antenna design. The project shares full schematics, firmware, and assembly details for makers and developers interested in NFC-powered embedded hardware.

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3.83

4 reviews

Product

3.33

Design & Polish

4.33

Performance

3.83

Mobile PageSpeed

Performance: 42 out of 100, Poor
Accessibility: 96 out of 100, Good
Best Practices: 100 out of 100, Good
SEO: 92 out of 100, Good

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Anonymous reviewer

9/14/2026

Tap the card to a phone and the 21 LEDs animate off harvested NFC power, then the contact link opens. That brief interaction fits a business card better than a battery gimmick. A small tap marker on the card would make the first use clearer.