I did a very similar thing with my group of young volunteer firefighters (also in Germany). We launched a total mass of 500 grams in order to avoid having to ge

I did a very similar thing with my group of young volunteer firefighters (also in Germany). We launched a total mass of 500 grams in order to avoid having to get a special permit for this (note: this will change in Germany quite soon!) We also used a Raspberry Pi Model A+, but recorded 720p video. We powered it using a 9V block battery and regulated the voltage to 5V. Worked like a charm! Here's some videos and pics: http://www.florianerzons.de/yffzhab/ http://www.florianerzons.de/yffzhab/ Edit: Completely forgot. I also wrote some blog posts for anyone asking themselves how this can be done: http://mactunes.de/posts/2015/2/25/yffzhab---taking-videos-at-20km/index.html http://mactunes.de/posts/2015/2/25/yffzhab---taking-videos-a... http://mactunes.de/posts/2015/3/2/yffzhab---powering-electronics-in-the-cold/index.html http://mactunes.de/posts/2015/3/2/yffzhab---powering-electro... http://mactunes.de/posts/2015/4/6/yffzhab---bill-of-materials/index.html http://mactunes.de/posts/2015/4/6/yffzhab---bill-of-material...