The Magdeburg Hemispheres
Make an impressively effective low-tech vacuum pump.
Posted by William Gurstelle
Categories: Education, Fun & Games, Science | No Comments
Drill Projects
Monkeysailor’s Photo Lab
Make your own Arduino-controlled color film processor.
Posted by Andrew Lewis
Categories: Arduino, Art & Design, Photography & Video | 2 Comments
Pop-Pop Steamboat
When you picture a steam engine, you likely imagine a giant cast-iron contraption festooned with knobs, valves, gauges, linkages, and wheels. This steam-powered toy boat has no moving parts and...
Posted by William Abernathy
Categories: Science, Kids & Family | 6 Comments
Trash Can Composter
I like to pick things out of trash cans and reuse castaway items. Here, I repurpose the trash can itself to facilitate recycling organic waste into beneficial compost. Commercial composting...
Posted by Thomas Arey
Categories: Gardening, Home | No Comments
Simple Night-Vision Goggles
The camera uses near-infrared light emitted by the LEDs. Since it doesn’t have a near-IR filter, it picks up the IR light better than a normal camera does. The LEDs...
Posted by jduffy105
Categories: Computers & Mobile, Fun & Games | No Comments
Optical Tremolo Box
Plug your guitar into light-programmable waveforms with this unique effects box.
Posted by Sean Michael Ragan
Categories: Art & Design, Music | 18 Comments
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...
Posted by Rick Schertle
Categories: Fun & Games | 3 Comments
Covert Listening Book
Connect a shirt pocket “amplified listener” hearing aid with an in-car FM transmitter, and you’ve got a wireless bug. Tuck them inside a hollowed-out book with the mic concealed by...
Posted by David Simpson
Categories: Fun & Games | No Comments
Bacteria Battery
Microbial fuel cells generate electricity from "metal-breathing" bacteria in ordinary mud.
Posted by Ashley Franks
Categories: Electronics, Science | 3 Comments
X10 Macro Module
One of the most powerful additions to an X10 system is macro capability, where a computer continuously monitors the powerline for trigger signals, and responds by executing a timed sequence...
Posted by Jim Newell
Categories: Computers & Mobile | No Comments
The Atlatl
Before the bow and arrow there was the atlatl*, or spear-thrower, an ancient weapon that could throw a spear or dart with enough force to penetrate a mammoth’s hide. It...
Posted by Daryl Hrdlicka
Categories: Woodworking, Fun & Games | 2 Comments
Bottle Radio
Crystal radio technology has been around for many years. This "bottle radio" take on a crystal radio requires no power source, operates on the power from radio waves, and receives...
Posted by Steve Hobley
Categories: Electronics | 6 Comments
