we're in a DIY golden age you can now build your own homemade research balloon for <$100, launch it into the sky, and follow its journey from your laptop and every balloon launched collects useful weather data + will let people send messages from places with no cell signal. here's how the whole thing works: > you use Stratolink's free build plans to put together a tiny device with sensors, GPS, a radio and two solar panels > then you attach it under a balloon, fill the balloon with lifting…