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 […]

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 […]

Speed Vest

Speed Vest

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

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 […]

LED Throwies

LED Throwies

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