Homemade Home Security
Build a 4-camera surveillance system and watch from any web browser.
Wire
Bent-Wire Crank Toy
Making things with wire looks simple, but it can be challenging. Pick up a few wire-bending tricks, though, and you can sketch in 3 dimensions and make anything from a tiny, delicate figurine to a large, mechanical sculpture with moving parts. Like sketching with a pen on paper, there’s no right way to do it, […]
The “Beer-Perch”
OK, so I didn’t really use beer bottles, but it’s the same idea. This project is a cheap, easy way to make a perch for your bird. Plus, it looks better than most store-bought, cheaply painted models! Enjoy!
The Bobbinator
Linear actuators are motors that work in a straight line. They’re very useful for controlling valves and levers, building robots, and retrofitting old mechanisms for digital control. The simplest form of linear actuator has only 2 positions, while more complicated actuators can be positioned just like stepper motors and servos. I needed 32 linear actuators […]
Tacit: A Haptic Wrist Rangefinder
Tacit is a wearable system that translates the distance to anything you aim your hand toward into pressure on your wrist. The closer the object, the greater the pressure. Sweep your hand around, and the device conveys to you a tactile image of your surroundings. I designed Tacit to help vision-impaired people navigate their environments, […]
Laboratory Cork Ring
Round-bottom flasks offer many advantages for chemical work that requires heating a liquid, but suffer from a major storage and handling drawback: They don’t sit flat on a work surface. The common solution is to equip the bench with one or more cork rings that the flasks can sit in, as shown, to cushion them […]
Geiger Counter
This DIY Geiger counter clicks and flashes an LED each time it detects a radioactive particle. It works with most common Geiger–Müller tubes, and easily connects to radiation rate meters, data loggers, true random number generators, and the Radiation Network’s GeigerGraph software. Share your radiation readings with the whole world!
