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Plenty of LEDs and useful too

The 2025 DORS/CLUC conference badge is a standout example of a well-executed, functional conference badge. While many badges focus on flashy lights and gimmicks, this one combines visual appeal with practical utility.

At its core is a bold alphanumeric LED matrix capable of displaying names and messages clearly, ideal for its role as a name tag during the conference. But it does more than just light up: it includes USB connectivity for data and power, an NFC reader for interactive features, and an onboard STM32L073 microcontroller for handling all operations.

One particularly creative use of the badge at the event was an NFC-based game, where attendees could scan badges or other items to participate. Post-conference, the badge remains useful—it can be repurposed as a notification display for emails, system alerts, or even calendar reminders.

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