Gnoke: Repurposing E-Waste into Zero-Energy Knowledge Devices

Gnoke turns discarded smartphones into zero-energy knowledge devices—reducing e-waste and eliminating reliance on the cloud.

I built Gnoke Bible, an ultra-lightweight, offline-first digital reader designed to extend the life of old, low-spec devices. Instead of letting aging smartphones become landfill, Gnoke repurposes them into permanent, offline knowledge tools.

Once loaded, the app runs with:

• Zero data usage 📴
• Zero server dependency ☁️
• Minimal battery consumption 🔋

This eliminates repeated data downloads and reduces reliance on energy-intensive cloud infrastructure.

Demo

🔗 https://edmundsparrow.github.io/gnoke-bible

Code

💻 https://github.com/edmundsparrow/gnoke-bible

How I Built It

Ultra-Low-Resource Development

The entire project was designed and built on a low-end Infinix Android device, targeting the same class of hardware it aims to preserve. This ensured real-world performance optimization for constrained environments.

Technical Decisions

• Vanilla Stack: Built with HTML, CSS, and JavaScript only — no frameworks
• Offline-First Architecture: Service Workers and localStorage store all content locally
• Energy Efficiency: Minimal CPU usage and reduced battery drain
• Device Longevity: Optimized for low RAM to keep older phones usable

Why It Matters (Earth Impact) 🌱

• Reduces e-waste by extending device lifespan ♻️
• Eliminates repeated data downloads, lowering energy consumption ⚡
• Reduces reliance on cloud servers, lowering carbon footprint 🌍
• Reduces paper demand by replacing frequently printed materials with a one-time digital download 📚
• Helps preserve trees by lowering repeated printing of books and documents 🌳

Prize Categories

Best Use of Google Gemini ✨

Google Gemini was used as a lightweight collaborator to refine optimization decisions and improve system efficiency.