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Jumpstarting the Onion Omega2 by Wolfram Donat

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Chapter 4 The Photovore

I’ve been interested in light-following robots, or photovores (“light-eaters”), as they’re called, ever since I saw my first BEAM robotic creations. BEAM robots use elements of biology, electronics, art, and mechanics to make realistic mechanical creatures—a photovore would fit perfectly into the right ecosystem.

At its simplest, a photovore uses photoresistors to “look” for the brightest light in the area and then moves in that direction. Many photovores are powered by solar cells, so it’s in their best interest to find the brightest spot around. Once they find it, they sit and recharge until the light moves, and then ...

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