The Web3 x Hardware Challenge: Test Your Skills on Our Open-Source IoT Templates 🛠️

Connecting IoT devices to the blockchain often feels like navigating a maze of complex boilerplate code. To solve this, HT Labs has developed five open-source project templates that seamlessly integrate real-world hardware with the Cardano network.

We are putting our code out in the open, and we want to challenge the dev.to community to dive in and push it to the limit.

🕵️‍♂️ The Challenge: Test, Break, and Innovate
This is an open playground for Web3 auditors, IoT hardware hackers, and Web2 developers curious about decentralized infrastructure. We invite you to test our logic, find edge cases, hunt down bugs, or propose entirely new ways to utilize our architecture.

Here is what is currently on our workbench waiting for your review:

• Decentralized Sensor Data Logging: Securely record temperature and humidity metrics directly on-chain using devices like Raspberry Pis.
• Smart Lock State Synchronization: Manage physical access seamlessly using Cardano's robust state tracking.
• Vending Machine Payment Notification: Utilize an ESP32 microcontroller to trigger physical hardware instantly the moment an ADA payment is confirmed on the preprod testnet.
• NFC Identity Verification: Validate student or employee credentials securely using on-chain CIP-68 NFTs by scanning an NFC card.
• QR Code Supply Chain Traceability: Generate and scan QR codes via a complete web interface to instantly verify a product's origin and ownership history directly from the blockchain.

🤝 What is in it for you?
This is not just about finding typos; it is an opportunity to get hands-on experience bridging the physical world with decentralized infrastructure alongside a passionate open-source team. This is your chance to experiment and share your thoughts on applying immutable ledgers to IoT devices and optimizing high-frequency data streams using Cardano's eUTxO model.

🚀 Let's Build the Future of IoT Together
Whether you find a critical bug, have an architecture suggestion, or just want to learn how Web3 meets hardware:
1. Fork it & Break it: Test the hardware integrations.
2. Speak up: Drop your ideas below, let us know what specific hardware templates we should build next, or open an issue on our GitHub repository!
3. Submit a PR: Show us how it is done!

👉 Explore the source code: htlabs-xyz/cardano-iot-example