Biped line walker using one medium motor

Built using Mindstorms® EV3 Home Edition and EV3 Expansion Set and some parts from other technic sets.

A line walking biped that will walk up and down a curved tape.

Build instruction in PDF format and EV3 program downloads at bottom of the page.

The photographs below show the routing of the cables to make them neater.


Medium motor connect to port C.

Color sensor connect to port 2.


Ensure that the turntable feet turn easily and are not 'sticky'.

The EV3 program is for a dark tape on a white table.
You may need to adjust the color sensor values for other colors.

Build Instruction (PDF) Download EV3 program (Windows PC) Download

This is the updated program, simplified by Daniele Benedettelli.

For those with Mac the program is as below

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