Hacking a Guitar into a Hurdy-Gurdy Hybrid with 3D Prints
https://hackaday.com/2025/07/10/hacking-a-guitar-into-a-hurdy-gurdy-hybrid-with-3d-prints/

It cranks, it keys! It doesn’t Julien Fry, but it’s worth its own video
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/07/hurdy-guitar-hand.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/07/hurdy-guitar-hand.png?w=800">If you’re looking for a long journey into the wonderful world of instrument hacking, [Arty Farty Guitars] is six parts into a seven part series on hacking an existing guitar …read more (https://hackaday.com/2025/07/10/hacking-a-guitar-into-a-hurdy-gurdy-hybrid-with-3d-prints/)

Double Your Printing Fun with Dual-Light 3D Printing
https://hackaday.com/2025/07/10/double-your-printing-fun-with-dual-light-3d-printing/

Using light to 3D print liquid resins is hardly a new idea. But researchers at the University of Texas at Austin want to double down on the idea. Specifically, they …read more (https://hackaday.com/2025/07/10/double-your-printing-fun-with-dual-light-3d-printing/)

DIY Navigation System Floats this Boat
https://hackaday.com/2025/07/10/diy-navigation-system-floats-this-boat/

[Tom] has taken a DIY approach to smart sailing with a Raspberry Pi as the back end to the navigation desk on his catamaran, the SeaHorse. Tucked away neatly in …read more (https://hackaday.com/2025/07/10/diy-navigation-system-floats-this-boat/)

Listen To The Sound Of The Crystals
https://hackaday.com/2025/07/11/listen-to-the-sound-of-the-crystals/

We’re all used to crystal resonators — they provide pretty accurate frequency references for oscillators with low enough drift for most of our purposes. As the quartz equivalent of a …read more (https://hackaday.com/2025/07/11/listen-to-the-sound-of-the-crystals/)

This Homebrew CPU Got Its Start in the 1990s
https://hackaday.com/2025/07/11/this-homebrew-cpu-got-its-start-in-the-1990s/

[Sylvain Fortin] recently wrote in to tell us about his Homebrew CPU Project, and the story behind this one is truly remarkable. He began working on this toy CPU back …read more (https://hackaday.com/2025/07/11/this-homebrew-cpu-got-its-start-in-the-1990s/)

This Week in Security: Bitchat, CitrixBleed Part 2, Opossum, and TSAs
https://hackaday.com/2025/07/11/this-week-in-security-bitchat-citrixbleed-part-2-opossum-and-tsas/

@jack is back with a weekend project. Yes, that Jack. [Jack Dorsey] spent last weekend learning about Bluetooth meshing, and built Bitchat, a BLE mesh encrypted messaging application. It uses …read more (https://hackaday.com/2025/07/11/this-week-in-security-bitchat-citrixbleed-part-2-opossum-and-tsas/)

PlayStation Case Mod Hides Gamer Shame
https://hackaday.com/2025/07/11/playstation-case-mod-hides-gamer-shame/