Laser Oscilloscope Wraps up Year of Hacks

Dino Segovis - Laser oscillograph

Congrats to MAKE pal Dino Segovis, who just published the 52nd and final project in his one-year Hack a Week series: This cool laser "oscillograph" that modulates an audio input across the beam from a green laser pointer using a linear actuator recovered from a junk hard drive. A spinning... Read more »

How-To: Use a Stepper Motor as a DC Generator

Stepper motor as DC bike generator

MAKE pal Dino Segovis brings us this handy tutorial on running a stepper motor in “reverse,” i.e. turning the shaft mechanically in order to generate electrical power, instead of the normal usage. He writes: Any electric motor will also output a voltage when it’s freely spinning. Stepper motors are much... Read more »

High Speed Liquid Observation Platform

Robert Woodhead of Wilmington, NC, had the rare opportunity to ride on G-Force One, a “vomit comet” style zero-G flight, and he’s bringing along a science experiment: Well, after several days, we have a new launch date – if all goes well, I’ll be in Florida Nov 19-20 to fly... Read more »