Batteries

The Stalker ‘Bot

The Stalker ‘Bot

Gather the parts and follow the basic instructions and you can have a robot capable of following moving objects! With basic coding experience, you can also change the distance at which the robot senses moving objects or the speed the robot moves. In order to do this project, a basic robot must be built that […]

Continue Reading
Sun Logger

Sun Logger

[youtube http://www.youtube.com/watch?v=SPvRGtFM5UM?wmode=opaque&w=620&h=349] A data logger is a device that is left to run for long periods of time, making regular measurements of external sensors. We’ll be using the Arduino microcontroller and a homemade “shield” (an Arduino accessory board) to create a device that gathers data on light-brightness in an area and how it changes over […]

Continue Reading
Make: Compressed Air Rockets Kit

Make: Compressed Air Rockets Kit

Building this rocket launcher is a breeze, and folks are always amazed at how it shoots reusable paper rockets 200–300 feet high. The launcher is made from PVC pipe. You pressurize its chamber to 75psi with about 18 strokes of a bicycle pump, then release all the pressure in a split second through an electric […]

Continue Reading
Simple Van de Graaff Generator

Simple Van de Graaff Generator

When I was younger, I spent hours perusing Bill Beaty’s electrostatics web pages. At the time, I didn’t achieve any real successes trying to build his high-voltage contraptions, and so my interest waned. Years later, I saw someone online use a soda can as a collector for their Van de Graaff generator, and all my […]

Continue Reading