The 24th of July we launched a weather balloon, hoping it would reach an altitude of at least 27 000meters. And it reached 33 000meters/109 000 feet!
Link to the full 4 hour video:    • Near Space Weather Balloon With Gopro...  

balloon bought from here: (600g pawan) http://randomaerospace.com/Random_Aer...
parachute: http://spherachutes.com/

Inside the box was:

Gps Tracker bought from ebay : http://www.ebay.com/itm/VehicleGSMG... (know it looks cheap and shitty, but it worked like a charm!)

Cell phone with an app that logged data. This was an old android cellphone. I also installed an app called gps logger, and thats how i got all the altitude information. The information about the trip itself (latitude, longitude) was stored in the cellphone and taken for closer look when we found the balloon.

Gopro hero 3 white edition. (Too bad if you don't like the fisheye leens)

Extra batterypack for gopro. This was also completely necessary, because without it the gopro wouldn't have any power left all the way through the trip.

Hand warmers. This was VERY important. without this, all the electronics would most likely fail, so a couple of handwarmers from your local sports store is a must. (they were even warm when we found the box, after experiencing temperatures as low as 60 C!)
We launched the balloon and the box from Verdal, and it landed in Viggja, Norway.

The box itself was also 100% waterproof. we used silicone to fill up all the gaps that could be exposed to water. and the electronics inside was also in waterproof bags. since we had to drill a hole through the waterprood casing to the gopro to keep it constant charging with a cable, we had to fill this gap ut with silicone aswell.
songs used:
BlackmillEmbrace    • Blackmill  Embrace (Full Version)  
MatisyahuSunshine    • Matisyahu  Sunshine  
(btw, this is sivrot brother and i just wanted to get some credz because i chose the music, hehe) here is my channel :    / @siro2899