2.13" E-Paper Badge – DIY Name Tag & QR Check-In

Description

Product Description

What is Linkbit?

Linkbit is a compact programmable electronic badge built around the ESP32-C3 and a 2.13-inch 122 x 250 e-paper display. It is designed for custom name badges, QR-code IDs, conference…

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What is Linkbit?

Linkbit is a compact programmable electronic badge built around the ESP32-C3 and a 2.13-inch 122 x 250 e-paper display. It is designed for custom name badges, QR-code IDs, conference badges, electronic business cards, schedules, labels, classroom projects, and low-power connected displays.

E-paper keeps the last image visible without a backlight or continuous display power, so information remains clear while the badge is idle. Linkbit is reprogrammable hardware: you choose the content, wireless behavior, and button actions in your own project.

Key features

ESP32-C3 microcontroller with Wi-Fi and Bluetooth LE

2.13-inch portrait e-paper display, 122 x 250 pixels

Three programmable buttons for menus, page switching, and interaction

USB-C for programming, charging, and power

4-pin 3.3 V I2C expansion header for sensors and modules

Onboard programmable WS2812 RGB status LED

Support for a single-cell 3.7 V lithium battery and onboard fuel-gauge circuitry

AilyBlockly visual programming support with example projects

Easy to program

AilyBlockly provides a block-based, AI-assisted development workflow for Linkbit. Start from an example, customize text and images, add button actions or wireless updates, then compile and upload over USB-C. The 3.3 V I2C connector also makes it easy to add compatible sensors and low-speed modules from the maker ecosystem.

Full English documentation, pinout, quick start, and project examples

Project ideas

Personal name badge or electronic business card

Event check-in badge with a QR code

Wi-Fi calendar, schedule, or information display

Multi-page badge controlled by the A, B, and C buttons

Classroom project for learning e-paper and ESP32-C3 development

Low-power status panel for a desk or small enclosure

Why did we make it?

We wanted a reusable e-paper badge that is easy to personalize without starting from a bare display module. AilyBlockly makes the first project approachable for beginners and education, while the ESP32-C3, buttons, I2C expansion, and exposed board features leave plenty of room for advanced maker projects.

What's included

1 x Linkbit 2.13-inch programmable e-paper badge

1 x USB data cable

Battery is not included. Use a compatible single-cell 3.7 V lithium battery if portable operation is required.