Open Source DIY Electronic Derailleur
I recently got into cycling and got interested in tracking my performance to improve my ride. I couldn't find an affordable bike computer that I could easily modify so I built my own. One thing lead to another and I found myself building an electronic derailleur. I thought others might be interested in doing the same so I wrote an instructable. Love to know what you think. If you like it please vote. http://www.instructables.com/id/DIY-Electronic-Derailleur/?ALLSTEPS The Arduino sketch, schematics, Fritzing diagram, bill of materials and CAD diagrams can be found on the project page…
Open Source DIY Electronic Derailleur launched on June 6, 2012 with 7 votes, #136 of 409 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 14 years on.
What it does
DIY Electronic Derailleur: If you just want to get building move on to step 1. Background This instructable is part of a larger project to build the ultimate bicycle computer, which you can read about on my blog. It will show you how to build an electronic rear deraille…
In the maker’s words, at launch
I recently got into cycling and got interested in tracking my performance to improve my ride. I couldn't find an affordable bike computer that I could easily modify so I built my own. One thing lead to another and I found myself building an electronic derailleur. I thought others might be interested in doing the same…
Does a similar job
all alternatives →
I Designed and Built an eBike2022 · endless-sphere.com · ▲304This post shows and explains the design of the eBike I built myself. I decided to post it on this specific forum because this is where it all started, by stumbling on another post, as mentioned in my entry.
I made an open-source laptop from scratch2025 · byran.ee · ▲3,237Hello! I'm Byran. I spent the past ~6 months engineering a laptop from scratch. It's fully open-source on GH at: https://github.com/Hello9999901/laptop
I made a new sensor out of 3D printer filament for my PhD2024 · paulbupejr.com · ▲886Here's a "behind-the-scenes" look at my development of a cool sensor during my PhD (electrical engineering). This sensor is only about 1/3 of my total research for my degree and took about a year. I've been on HN for a while now and I've seen my fair share of posts about the woes of pursuing a PhD. Now that I'm done with mine I wanna share some anecdotal evidence that doing a PhD can actually be enjoyable (not necessarily easy) and also be doable in 3 years. When I started I knew I didn't want to work on something that would never leave the lab or languish in a dissertation PDF no one…
Free e-book about WebGPU Programming2024 · shi-yan.github.io · ▲471I am excited to announce the launch of my e-book on Graphics/WebGPU programming! This project has consumed much of my spare time, during which I developed various tools to facilitate the publishing process, including a code playground and a static site generator that can reference sample codes. However, I'm feeling burnt out and ready to call it finished, even though it may not feel completely done. Avoiding another abandoned side project has been my primary motivation in reaching this point.


More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲343Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, June 2012
the whole month →- MI
Life & fun · 2012 · movies.io
- EW
Find information, resources and relevant links for easel.io. This domain may be for sale.
Life & fun · 2012 · alpha.easel.io
- SE
Dev tools · 2012 · ironspread.com
- AN
Life & fun · 2012 · topiama.com

An open-source guide to working with light A visual guide to learning your camera
Dev tools · 2012 · photography.bastardsbook.com

Sock Club – Quality and care in every pair. The highest quality monthly sock subscription. Free shipping. Include a personal message for your loved ones.
Commerce · 2012 · sotmclub.com