Nabil Tewolde of Markham, ON, created an instructable on how to build your own electronic derailleur as part of his bike computer project. Code, BOM, and schematics on Github.

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


  • Mateo

    Tiagra? Yikes. I think all the effort warrants Ultergra.

    • http://nabilt.wordpress.com nabilt

      I plan to for the next version. Since the modifications are permanent I decided to try it with a cheap derailleur first.

  • http://andylundell.com AndyL

    Is this the first step towards a automatic shifter?

    • http://nabilt.wordpress.com nabilt

      That wasn’t my plan, but a lot of people have requested that feature. I guess folks who ride casually would enjoy it so I’ll add it to the backlog.