Make: Projects

Hydrogen-OxygenBottle Rocket

Use electricity to split tap water into

hydrogen and oxygen gases, then use

this explosive gas mixture to power a

two-stage, electronically timed rocket.

By Tom Zimmerman

90

Lunchbox

Laser Shows

Build three different laser effects

machines that fit into metal

lunchboxes to create exciting sound

and light shows. By Mike Gould

Auto-

Phenakistoscope

Motorize a 19th-century parlor

novelty, and keep its frames synched

to an LED strobe by using a sensor

and an Arduino microcontroller.

By Dan Rasmussen

100

110

4 Make: Volume 20