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A BEAM Pummer, made with 16 BPW-34 Siemens Osram 1/8″ solar cells as the power source.

Solar Engine 2 [via]

From the pages of MAKE:

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Part robotic plant life, part techno-sculpture, these desktop toys are easy and fun to make, the pummer!. Here’s the free article, from the pages of MAKE 08 – Toys and Games:

Click here to download the PDF, or get this PDF and many others including our audio and video via iTunes (RSS 2.0 feed).