Plenty Of LEDs And Useful Too: The 2025 DORS/CLUC Badge
1 min read
Summary
An open-source conference in Croatia has issued an electronic badge to attendees which can be used as a general purpose notification device, displaying a user’s name and for NFC-based games.
It has an alphanumeric LED display, USB and NFC reader components, and was created using an STM32L073 processor, an IS31FL3731 LED matrix driver chip and an ST25R3916 for NFC.
All the design files are available on GitLab, and the device is now capable of being used for whatever purpose attendees can program it for.
This highlights the potential for flexible, innovative use of electronic badges for far more applications than just conferences.