Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached …read more (https://hackaday.com/2026/04/19/building-a-rim-driven-jet-engine/)

Rack Cage Generator Gets Your Gear Mounted
https://hackaday.com/2026/04/19/rack-cage-generator-gets-your-gear-mounted/

Sometimes, as hackers and makers, we can end up with messy lashed-together gear that is neither reliable nor tidy. Rackmounting your stuff can be a great way to improve the …read more (https://hackaday.com/2026/04/19/rack-cage-generator-gets-your-gear-mounted/)

2026 Green Powered Challenge: The Eternal Headphones
https://hackaday.com/2026/04/19/2026-green-powered-challenge-the-eternal-headphones/

Noise cancelling headphones are a great way to insulate yourself from the bustle of the city, but due to their power requirements, continuous use means frequent recharging. [Alessandro Sgarzi] has …read more (https://hackaday.com/2026/04/19/2026-green-powered-challenge-the-eternal-headphones/)

Hackaday Links: April 19, 2026
https://hackaday.com/2026/04/19/hackaday-links-april-19-2026/

We’ll start things off this week with a story that’s developing more than 25 billion kilometers from Earth — on Friday, NASA announced that the command had been sent to …read more (https://hackaday.com/2026/04/19/hackaday-links-april-19-2026/)

Modded Server PSU Provides Plenty of Current
https://hackaday.com/2026/04/19/modded-server-psu-provides-plenty-of-current/

Most makers find themselves in need of a benchtop power supply at some point or another. Basic models can be had relatively cheaply, but as your current demands go higher, …read more (https://hackaday.com/2026/04/19/modded-server-psu-provides-plenty-of-current/)

Quirky Electric Car Rides the Rails
https://hackaday.com/2026/04/19/quirky-electric-car-rides-the-rails/

We wouldn’t be surprised if you’d never seen the Spira before. The lightweight three-wheel vehicle is closer to a go-kart than a traditional car, and that’s before you even get …read more (https://hackaday.com/2026/04/19/quirky-electric-car-rides-the-rails/)

DIY Nuclear Battery with PV Cells and Tritium
https://hackaday.com/2026/04/20/diy-nuclear-battery-with-pv-cells-and-tritium/

Nuclear batteries are pretty simple devices that are conceptually rather similar to photovoltaic (PV) solar, just using the radiation from a radioisotope rather than solar radiation. It’s also possible to …read more (https://hackaday.com/2026/04/20/diy-nuclear-battery-with-pv-cells-and-tritium/)

Flash Joule Heating Recovers The Good Stuff
https://hackaday.com/2026/04/20/flash-joule-heating-recovers-the-good-stuff/