HOW TO – Build a one-motor walker


I featured Jerome Demer’s ingenious little one-motor walker in my book Absolute Beginner’s Guide to Building Robots. I’ve been hoping he’d put up an Instructable and he finally has. This is a bit of a finicky mechanical build, but worth the effort. It uses a standard BEAM bicore circuit as its brain (via the 74HCT240 chip).

How to build the one motor walker!


4 thoughts on “HOW TO – Build a one-motor walker

  1. Marcus says:

    On the BEAM Wiki there are a lot of descriptions and tutorials for walkers:

  2. Jessi says:

    You can get a parts bundle to build this robot from Solarbotics for $30.90 at

    SheekGeek also have a one motor walker kit for $47.50 that is larger and looks like a black widow walker at

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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at

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