Batteries

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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Speed Vest

Speed Vest

This lightweight night-cycling vest displays your current speed in glowing, 7-inch-tall numbers easily visible to cars.

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LED Throwies

LED Throwies

Make and toss a bunch of these inexpensive little lights to add color to any ferromagnetic surface in your neighborhood.

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Vibrating Pillow

Vibrating Pillow

By Annie Shao and Rachel McConnell There are pillows that look good, and there are pillows that feel good. For those inclined to add a little buzz to their home décor, try making this fun vib-illow. Take an arcade push button, a couple of batteries, and a cellphone vibrator and you’ve got a super simple […]

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