# Open-Source eInk Bike Computer

14 Hacker News commenters recommended Open-Source eInk Bike Computer and 1 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** An open-source eInk bike computer that people find readable in direct sunlight and practical for rides. The most common caveat is that some metrics look hard to read while riding.

## Why people recommend it

- eInk screen readable in sunlight (2 comments): "i do absolutely love how readable it is in direct sunlight" ([source](https://news.ycombinator.com/item?id=49571567)) "eInk is the right display tech." ([source](https://news.ycombinator.com/item?id=49568183))
- Praise for the project's innovation (3 comments): "I think that’s genuinely cool and the main innovation here." ([source](https://news.ycombinator.com/item?id=49569306)) "Love the project and progress made" ([source](https://news.ycombinator.com/item?id=49579779)) "Excellent job! I had no idea about the LilyGo platform. Amazing." ([source](https://news.ycombinator.com/item?id=49582069))

## What people warn about

- Some metrics hard to read while riding (1 comments): "some of the metrics look like they'd be nearly impossible to read while riding" ([source](https://news.ycombinator.com/item?id=49568629))

## Where to get it

- [See price on Amazon](https://www.amazon.com/s?k=eInk+bike+computer+open+source&tag=hackerapprove-20) (affiliate link)

## Cite as

Hacker Approved, "Open-Source eInk Bike Computer", https://hackerapproved.com/p/open-source-eink-bike-computer/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).