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Laurens Valk built this quick and dirty “most useless machine” with a Lego Mindstorms EV3 set. It consists of a touch sensor acting as a switch and a servo motor resetting the switch every time it’s pulled. It’s a machine with no purpose other than to shut itself off! And how can you not adore the cute eyes on the EV3’s liquid crystal display?

In any case, Laurens provides complete step-by-steps for building the robot, plus the EV3 program to make it work.

For me the program held the most fascination. I’m going to play around with EV3 programming today and learning the difference between the old Mindstorms NXT programming interface and the new and very sleek EV3 system.

John Baichtal

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


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