This isn’t strictly confined to the realm of Raspberry Pi, but I thought I’d share it anyway. Dave Akerman, who has launched loads of balloons (including the famous Babbage Jump and the T.A.R.D.I.S. launch) and has now written a guide to the process. If you’ve ever wanted to launch a balloon (with a Pi attached, of course) into near-Space, make sure you read this guide first.