Pictures From Space For $150

September 13, 2009 by 47 Comments

prelaunch

Ever wanted to be able to launch a balloon into space, track its location via GPS, take some photographs of the curvature of the earth, and recover the balloon, all for the low low cost of $150? [Oliver Yeh] sent in his teams project, Icarus, which does just that. The group of MIT students found that they could use a weather balloon filled with helium to reach heights of around 20 miles above the earth;  their particular balloon achieved 93,000 feet (17.5 miles). Then, utilizing only off the shelf components with no soldering, conjured up a GPS tracker using a Motorola i290 Prepaid Cellphone. They then used a Canon A470 loaded with the chdk open source firmware to take pictures. After seeing the results of their launch, the team hopes that this could rejuvenate interests in science and the arts.

Balloon Based Satellite

July 10, 2009 by 14 Comments

balloonsat

This project provides an opportunity to conduct near space experiments. The flight computer, BalloonSat Extreme, is controlled by a BASIC Stamp 2pe. The complete BOM with PCB artwork is provided. There is enough hardware to control cameras, servos, a Gps, and five digital I/O. The computer is also equipped with a 12 bit ADC to log experiment results. The device seems limited to 30KB of storage. Though the author suggests this memory limitation is more than adequate, we are wondering if an implementation of the Nyquist sampling theorem is in use at all. For further reading the author has provided information regarding Amateur Radio High Altitude Ballooning.

[via adafruit]

Defcon 16: Covert Warballooning Flight

August 10, 2008 by 6 Comments


Since last month, when the Defcon warballooning event was announced, [Rick Hill] finished building his rig and even got FAA approval for the flight. Just when everything seemed set, the Riviera Hotel management decided not to allow the takeoff from their property. So, naturally, [Rick] and his team rented a moving truck and covertly inflated the balloon inside. They launched it in an abandoned parking lot and drove through the Vegas strip. They were surprised to find that about one third of the 370 wireless networks they scanned were unencrypted.

[photo: JoergHL]

[via /.]

WarBallooning At Defcon

July 30, 2008 by 3 Comments

[rocketman] has posted about a new event at Defcon dubbed WarBallooning. They are using a Kismet drone (a modified WRT54G), a webcam, and a few high gain antennas. The balloon will be launched at about 15 stories and will be remotely fed targets chosen directly by the Defcon participants. The the directional antenna will be mounted to the camera so pan and tilt can be controlled. The Kismet CSV files will be available for everyone after the event.

If you are interested in WarDriving or building you own high-gain antennas, we suggest you check out this WiFi biquad dish antenna mounted on a car. If cars are too boring, or you do not have one, you could always go WarSailing or WarFlying. Yes, the permutations are endless.

[photo: JoergHL]

Helium Balloon Aerial Photography

May 10, 2006 by 19 Comments

aerial photography

So, you’ve got an itching desire to inflate 150 helium balloons, but have no idea what to do with them afterwards? Well, readers Stefan and Michel decided to build a simple aluminum frame to mount a cheap digital camera and do some aerial photography. Instead of building a complex timing system they just attached a strong motor from a security camera. It’s powered by a AA and is geared really low so it only triggers the shutter every 12 seconds. They deployed the rig from the fortifications surrounding Wilemstad in the Netherlands. There are several pictures of the city (and the occasional envious child) on their site. If you follow the “continue reading” link you’ll see a couple more pictures of the camera mount.

Continue reading “Helium Balloon Aerial Photography” →

High Altitude Linux Weather Balloon

February 9, 2005 by 15 Comments

weather balloon

“i found it in my cow pasture, buried in the snow. i was riding my 4 wheeler.”  that’s what the postcard said when it returned to me after i sent it up with a helium balloon a couple weeks ago.  it traveled roughly 100 miles.

but i digress.

james meehan’s story began quite similarly, but he decided to take his balloon fascination to a much more fascinating and hackerly level.  follow the link to read about how he designed and constructed his linux powered weather balloon, complete with gps, packet radio uplink, and video camera.  he says it’s the coolest thing he’s ever done.  i can’t really vouch for what else he’s done, but this project is pretty darn cool.

when you’ve finished marvelling at this hack, make sure to also check out the home brew, high altitude glider we wrote about a while back.  i love this high altitude mischief.  if you know of similar projects, send ’em in!

Continue reading “High Altitude Linux Weather Balloon” →

twitter

HamRadioTweets Gets The Word Out

December 23, 2014 by 24 Comments

In times of crisis, or extreme government control, it can be difficult to spread critical information to people who can help. A good example of this was during the Arab Spring in 2011. When your Internet connection is taken away, it can feel as though all is lost. Unless you have a ham radio, that is.

For many people the thought of ham radio conjures up images of old guys twisting knobs listening to static, but it’s actually come a long way in our modern digital age. For example, you can now send tweets via ham radio. This project was actually started in 2011 by [Bruce Sutherland]. The Egyptian government had shut down the country’s Internet access after citizens were posting information about the extreme violence they were facing. [Bruce] wanted a way to help  others get the word out, and he came up with HamRadioTweets. This system allows a user to send tweets via ham radio.

The system actually piggybacks off of a ham radio service called APRS. This service is most often associated with GPS tracking systems, such as those found in nearspace balloons, but it can also be used to send simple text messages over the air. APRS works thanks to the vast network of receiving stations setup all around the world. These stations can receive messages and then re-transmit them, greatly extending the reach of the original transmitter. Some of them are even hooked up to the Internet to get the messages to go distances that would be extremely difficult and unreliable by traditional means.

[Bruce’s] system hooked into the Internet component and watched for messages being sent specifically to “TWITR”. The Python based system would then read these messages and re-transmit them over Twitter. The project died out a while back after Twitter updated their API. Now, it’s been rebuilt on Ruby by [Harold Giddings]. The project website was handed over to [Harold] and he is currently maintaining it. Hopefully you’ll never need to use this software, but if the time comes you will be glad it’s available. You can watch [Harold] bounce an APRS message off of the International Space Station and on to Twitter in the video below. Continue reading “HamRadioTweets Gets The Word Out” →