EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Hacker News·Sep 4·5 min read
Show HN: Open-Source eInk Bike Computer
TL;DR
An open-source eInk bike computer features a 4.7" sunlight-readable display, GPS, and Bluetooth connectivity for sensors. It allows users to install firmware via a desktop browser over USB.
✦ Why It Matters
Consider building or contributing to open-source projects to enhance your cycling experience with customizable technology.
Key Takeaways
- Explore open-source hardware projects for practical experience.
- Evaluate trade-offs in device features versus cost.
- Consider waterproofing solutions for outdoor electronics.
- Utilize Bluetooth for sensor integration in your projects.
How It Works
The bike computer operates using a 4.7-inch e-paper display that consumes minimal power, allowing for extended battery life. It connects to GPS satellites for location tracking and uses Bluetooth 5 to communicate with various sensors, enhancing the cycling experience by providing real-time data on heart rate and cadence.
⚠ The Catch
The device lacks a barometric altimeter, meaning it cannot accurately measure elevation changes, relying instead on pre-existing map data for ascent calculations.