Month: March 2008

Paper cameras – old and new

In 1970’s Communist Czechoslovakia, the state-run magazine ABCs for Young Technicians and Natural Scientists published a cut-out paper camera called the Dirkon. Looking very much like an old Nikon, the little camera is essentially a simple pin hole design, dressed up to look like its SLR cousin. Fast forward to 2000’s Capitalist USA and you’ll […]

Arduino Etch-A-Sketch clock

Jason @ Hackszine writes: Check out Angela Yuan’s Etch-A-Scetch Clock. An Arduino powers a few stepper motors that clear the screen once a minute and then draw the current time. It looks like there is a laptop that is sending commands, presumably time updates, to the Arduino via processing. Her site is a little scant […]

Recycled Book Cuffs

Jamie Keiles creates fashionable wrist cuffs using the spines of old and damaged books, stitched up with leather backings and heavy-duty snaps. (She’ll line them in vinyl too, if you’d prefer.) I like the graphic, unisex look of these and of course the recycling aspect is a great plus. Recycled Book Cuffs

Foam disc turret gun

You could buy a USB rocket firing turret, but this is a lot more fun to build. The ultrasonic sensor looks for any object that is closer than 30 inches. When it returns a positive signal, the turret turns and fires a foam disk. The source code is available for programming your BasicStamp2, and I’m […]

Nifty low-voltage coil gun

Nifty low-voltage coil gun

From Hackaday: Each coil is driven by a dedicated relay, and a PC power supply feeds the system juice, while a programmable logic controller does the work. Since it’s just a matter of triggering the coils in order, the PLC could be easily replaced by a micro controller. Coil Gun version 1 [via]