Chemical-based photography can seem like a dark art at times, but it needn’t be so. [Dan K] developed the Simple Enlarger to help spread the idea that classical photographic darkroom …read more (https://hackaday.com/2022/04/26/simple-photo-enlarger-makes-great-addition-to-any-darkroom/)

Fort Knutz – Squirrels Go All Mission Impossible
https://hackaday.com/2022/04/26/fort-knutz-squirrels-go-all-mission-impossible/

Suburban backyard with a squirrel obstacle course.
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2022/04/fortknutsfeature.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/04/fortknutsfeature.png?w=800">[Mark Rober] has a bird feeder in his back yard. Also, squirrels who eat the seed. So, as one does, he built a nine part squirrel obstacle course with a …read more (https://hackaday.com/2022/04/26/fort-knutz-squirrels-go-all-mission-impossible/)

Genaille’s Rods: When Paint Sticks Do Math
https://hackaday.com/2022/04/26/genailles-rods-when-paint-sticks-do-math/

What is a hacker, if not somebody who comes up with solutions that other just don’t see? All the pieces may be in place, but it takes that one special …read more (https://hackaday.com/2022/04/26/genailles-rods-when-paint-sticks-do-math/)

Building Reaction Wheels With Python and LEGO
https://hackaday.com/2022/04/27/building-reaction-wheels-with-python-and-lego/

Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in …read more (https://hackaday.com/2022/04/27/building-reaction-wheels-with-python-and-lego/)

NASA’s Giant SLS Rocket Rolled Back for Repairs
https://hackaday.com/2022/04/27/nasas-giant-sls-rocket-rolled-back-for-repairs/

There’s little debate that the most exciting move in a rocket’s repertoire is when it launches itself skywards on a column of flame. But failing that, it’s still pretty interesting …read more (https://hackaday.com/2022/04/27/nasas-giant-sls-rocket-rolled-back-for-repairs/)

The State of Play In Solid State Batteries
https://hackaday.com/2022/04/27/the-state-of-play-in-solid-state-batteries/

Electric vehicles are slowly but surely snatching market share from their combustion-engined forbearers. However, range and charging speed remain major sticking points for customers, and are a prime selling point …read more (https://hackaday.com/2022/04/27/the-state-of-play-in-solid-state-batteries/)

No-Laser CNC Engraver is Something New Under the Sun
https://hackaday.com/2022/04/27/no-laser-cnc-engraver-is-something-new-under-the-sun/

Hooking up a laser to a CNC gantry isn’t exactly an Earth-shattering innovation, but it does make for a useful tool. Even a cheap diode laser mounted to an old …read more (https://hackaday.com/2022/04/27/no-laser-cnc-engraver-is-something-new-under-the-sun/)