The world is more equal than you think
Summary
The article covers pico balloons for long-duration amateur ballooning, showing how hobbyists can use low-cost components like a Raspberry Pi Pico, GPS, and solar power to track payloads via the WSPR network without satellites. It documents practical challenges (power, emissions, regulatory compliance) and real-world launch outcomes, making it a useful case study for DIY hardware and amateur radio readers.