DIY High-Altitude Ballooning
The Ape With No Name writes "Ever wanted to see the black of space but just can't pay a cool 20 million to do so? Well, just build your own small-scale, high-altitude balloon like these guys out of styrofoam, duct tape, electrical kit and a 'consumer-grade' weather balloon. They reached an estimated 52000 feet, had all kinds of tech issues, including hacking code to fly the mission minutes before launch. Cool pics and video were taken throughout the mission. Next flight is in approximately 2 weeks with 100,000 feet the goal."
Mirror for videos: Launch & Prep - Just Launch - Recovery
I ask that you please do not stream them. Thanks!
Here's a cool webpage of a group that did something similar. Their baloon made it up to about 94,000 ft. The site has a cool writeup with pictures and such of their project.