Meteotek has combined two of my favorite things - balloons and electronics. Checkout the images for this balloon sat project.
Every time I see projects like this, it makes me want to buy a large tank of helium. Meoteotek was a project put together by a group of students to launch a data logger into the lower atmosphere. I am unable to translate Spanish Catalan, but pictures have a way of speaking for themselves.
This team emailed us to let us know that the Copernicus GPS module and the SCP1000 pressure sensor performed admirably at 30,677m (100,000ft)! I love that they used a brick of AA batteries. I would have used a LiPo (lighter, better capacity). Do alkaline batts hold up better under cold temperatures than LiPos? There's a good video of the preparations and launch.
It looks like it was a successful launch and recovery. Congrats guys! Awesome project!