Biped line walking duck using one medium motor.
With nodding head, flapping wings, open/close beak and 'quack'.

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

A line walking biped duck that will walk up and down a curved tape nodding its head, flapping its wings, opening/closing its beak and quacking.

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

The POV-Ray rendered images 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 (blue) tape on a white table.
You may need to adjust the color sensor values for other colors.

Build Instruction (PDF) Download EV3 program Download

The program is as also shown below

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