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TOPICS
The Business Card That Lights Up Without Batteries
·
Adafruit Industries Blog
·
Sept. 5, 2026, 5:55 p.m.
Random
nfc
LEDs
circuit board
NFC Technology
Circuit Design
Business Cards
LEDs
Summary
Kevin Tang created an innovative business card that lights up using power from an NFC-enabled phone instead of batteries. This post explains the technology behind it and its functionality.
Read full post on blog.adafruit.com →
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