A $100 magnetic imaging tile, a Teensy 4.1, and some code (available for free on our Hands On GitHub page) can turn a simple craft box into a programmable magnetic lock that you can open with just a hand gesture. #DIYbuff.ly/jryPjDz
During the 2026 solar eclipse, Miloslav Druckmüller’s team used lenses, interference filters, and intensive numerical processing to turn a couple of thousand eclipse exposures into awesome images that could help reshape our understanding of solar physics.