Story
What is this project about?
This project transforms the humble business card into an eye-catching, interactive tech gadget powered by the ESP32C6 module.
Instead of a plain piece of paper, you hand someone a device that lights up, plays games, shows weather updates, and even shares your contact info via NFC or QR code.
The card features:
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A 17×9 WS2812B NeoPixel LED matrix for vibrant visuals and animations.
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MPU6050 IMU for tilt and motion-controlled effects.
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NFC tag and QR code to instantly share contact or portfolio links.
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Wi-Fi + Bluetooth (via ESP32C6) to fetch live weather/time or send/receive data.
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Multiple fun modes: Snake game, Pong, digital animations, ambient light mode, and more.
This isn’t just a card — it’s a tech showcase in your pocket.
How does it work?
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Startup Animation
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When powered via USB-C, the card greets with a "Hi" message and a blinking emoji face on the LED matrix.
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Main Menu
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Scroll through available modes using the navigation buttons.
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Select a mode by pressing the center button.
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Game Modes
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Snake Game: Control the snake using the buttons, try to collect food, avoid crashing.
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Pong Game: Classic paddle-and-ball gameplay.
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Bouncing Ball Simulation: The ball reacts to your card movements using IMU tilt data.
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Live Data Modes
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Weather Fetch: Connect to Wi-Fi, fetch live temperature, weather condition, and display on the LED matrix.
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Time Display: Auto-syncs with NTP servers to show the current time in scrolling format.
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Contact Sharing
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Tap with NFC to share your digital profile, portfolio, or contact info.
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Scan QR code printed on the back for instant access.
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Step-by-Step Tutorial
Step 1: Design & Fabrication
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Design the PCB to fit all components in a business card size (90×54mm).
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Arrange the LED matrix on the front, ESP32C6 module and MPU6050 on the back.
Step 2: Assembly
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Solder the LED matrix to the PCB.
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Mount the ESP32C6, MPU6050, NFC chip, and push buttons.
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Attach the QR code label.
Step 3: Programming
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Install the Arduino IDE and ESP32 board support.
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Load the startup animation code, menu navigation, and game modes.
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Add weather/time fetching functions via Wi-Fi.
Step 4: Testing
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Connect the card via USB-C and run through each mode.
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Test NFC and QR code functions.
(Insert GIF or video clip of startup animation and menu scroll)
Step 5: Show Off!
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Share it at events, meetups, or client meetings.
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Hand over not just a card, but an experience.
