Technology

Stepper motor twirly disc

Stepper motor twirly disc

Realevents writes – The lunatic progress of the computer industry means that there are enormous numbers of small stepper motors in rubbish – most printers contain at least two. Larger ones from really big dot matrix and some laser printers can be used as small electricity generators, capable of outputs between several and twenty Watts. […]

HOW TO – Make a “Witness camera”

HOW TO – Make a “Witness camera”

Alberto writes – The Witness Camera is an automated, self-recording surveillance camera, that uses a gigabyte-class flash card as recording media. I designed the Witnesscam because available surveillance solutions were too expensive or impractical for home use. I built the system from a VGA CMOS colour camera, a passive-infrared (PIR) movement sensor, an ATmega32 processor, […]

The BrakeDrum

The BrakeDrum

This cool musical instrument is based on the circuit bending 5 toys, and a trigger system made from mouse pads and sheet metal. The website has audio samples, electrical diagrams, and pictures of the whole process. If you want to try this one yourself, be warned, this is not your every day circuit bending. – […]

Cat hunting robot

Cat hunting robot

The headline is a little misleading, a robot didn’t actually hunt a cat… just looked for one GKD writes – For many years now I have searched for practical uses for my robots, including my latest research project into behavioral control software that simulates a pet’s behavior . Most of my previous projects have been […]