Bolts

Tiny Wanderer

Tiny Wanderer

In early 2011 my robot club, the Dallas Personal Robotics Group, was looking for a way to help our beginning members build up their skills. To this end, we produced a series of lessons covering 5 topics needed to make a simple, programmable robot: making PCBs with the toner transfer method, programming ATtiny microprocessors, laying […]

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Build a Lawnbot 400

Build a Lawnbot 400

I have always hated mowing the lawn. I was the guy who only mowed when the grass got to be 6″ taller than the neighbors’ lawns — not because I don’t like my neighbors, but because mowing was such a pain. After being hit by one too many rocks, I decided I no longer wanted […]

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Plant Light Stand

Plant Light Stand

If you aren’t fortunate enough to have a heated greenhouse but still want to start your own plants from seed in the winter, this inexpensive plant light stand will get your plants growing — even in a dark, dungeon-like basement. It’s made primarily from common 2×4 boards, 3/8″ plywood, and fluorescent shop lights. A neat […]

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Dodecahedron Lamp

Dodecahedron Lamp

People appear symmetrical, but even the most perfect human face shows irregularities if we compare the left side with the right. Perhaps this is why the absolute, rigid symmetry of crystals seems beautiful yet alien to us. Unlike DNA’s soft spiral, a crystal’s molecular bonds align themselves to form regular three-dimensional structures, which the Greeks […]

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