Two Motor Walker

Two Motor Walker is an early attempt at a minimal walking robot.

It's based on the Programmable Brainibot.

Antennae allow it to back-up and turn when it hits an obstacle.

Sensors at the front and back tell when the legs have reached their end-stops (you can see them as short pieces of thick wire). In fact, they're unneccessary - just run the motors for a fixed time, they'll stop when they hit the end stops.

It's easy to get the motor-timing for the robot to walk forwards and backward. Turning is harder but possible: the rubber feet mean that the back legs get a better grip during turning and swivel the front end around.


Questions or comments ? E-mail me at

No part of this web page may be reproduced in any form or by any means, including photocopying and recording, for any purpose without the express written permission of Analogue Information Systems Ltd.

This web page is copyright © 2008 Analogue Information Systems Ltd., 1 Warrender Park Crescent, Edinburgh EH9 1DX, Scotland, UK, Tel: +44 (0) 131 228 6008. All Rights Reserved