Dave Akerman M6RPI has used a Raspberry Pi computer board as the flight computer on a High Altitude Balloon (HAB) and sent back live images from near space at an altitude of almost 40 km.
The balloon, appropriately called PIE1, was launched from Brightwalton, in Berkshire on July 14, 2012. The images were transmitted on 434.650 MHz (300 bps, 600 Hz shift) in the amateur radio 70cm band using the Slow Scan Digital Video (SSDV) standard.
PIE1 reached an altitude of 39,994 metres and images were received as far away as Northern Ireland (that’s over 500 km, not bad for just 10 mW on 434.650 MHz!).
See the images sent by PIE1 http://sanslogic.co.uk/ssdv/live
The full story and pictures are on Dave Akerman’s website http://www.daveakerman.com/?p=592
Read The Register article http://www.theregister.co.uk/2012/07/17/pi_ascent/
Slow Scan Digital Video (SSDV) http://ukhas.org.uk/guides:ssdv
UK High Altitude Society http://www.ukhas.org.uk/
High Altitude Balloons have featured at a recent AMSAT-UK International Space Colloquium in Guildford.
You can watch a video online of the presentation that Cambridge University Spaceflight gave called “Teddy Bears in Space” at http://www.batc.tv/channel.php?ch=1
In the Archive List category box select AMSAT then click Select Category then in the stream box select Teddys and click on Select Stream
Or download a copy of the video at http://www.batc.tv/vod/Teddys.flv
This years AMSAT-UK International Space Colloquium takes place Sept. 15-16 details at