18: Made on Earth
Snapshots from the world of backyard technology.
29: 1+ 2+3: Memory Game
Give an old standby some new flavor and create a perfect
rainy-day activity. By Julie A. Finn
30: A Feel for Engineering
Ugo Conti’s Proteus boat behaves like a water skipper.
By Todd Lappin
Takayuki Ohira creates planetariums for everyone.
By Lisa Katayama
38: Set in Stone
An interactive concrete interface.
By Ithai Benjamin and Vikram Tank
40: Speed Week
What Cape Canaveral is to astronauts, the Bonneville Salt
Flats are to those who love to drive fast.
By William Gurstelle
43: Doing Da Vinci
A new TV series puts the inventions of perhaps the greatest
of all makers to the test. By Jeanne Storck
44: Worst-Case Internet
Online connectivity at disaster sites. By Mike Outmesguine
110: 1+ 2+3: Sneaky Battery
Power an LED with lemons or spare change. By Cy Tymony
139: 1+ 2+3: Paper Cup Boombox
Instant speakers from earbuds. By Matthew T. Miller
Ugo Conti’s wave
READ ME: Always check the URL associated
with a project before you get started. There
may be important updates or corrections.
Mini fume extractor, drawer
organizer, jeweled finish for
MIDI camera control, eye
contact webcam hack.
Solar Joule bracelet, guitar
effects from light bulbs,
proximity card repair.
148: Howtoons: Robots Within Reach
Extend your grasp. By Saul Griffith and Nick Dragotta
155: Aha! Puzzle This
Trouble at the Robot Invitational. By Michael H. Pryor
Titanium nail puller, autonomous blimp kit, Mad Science,
and extra heavy duty screwdrivers.
164: Toys, Tricks, and Teasers
Make a five-pointed star with a single cut. By Donald Simanek
166: Remaking History
Build a fire piston. By William Gurstelle
169: Maker’s Calendar
Some of our favorite events from around the world.
Compiled by William Gurstelle
175: Make Money: Half-Dollar Glasses
Correct myopia with pinholes. By Tom Parker
The ElliptiGO glide bike. By Brent Teal