Normally, when you think of a radio transmitter, you want the strongest signal and range. But if your radio operator is secretly operating as a spy, broadcasting their position isn’t …read more (https://hackaday.com/2026/05/20/spy-tech-a-quiet-radio-for-spies/)

DIY Potentiometer is a Great Teaching Aid
https://hackaday.com/2026/05/20/diy-potentiometer-is-a-great-teaching-aid/

A potentiometer is a simple electrical device that allows resistance to be varied at will. Most everyone in the electronics field is intimately familiar with how they work on a …read more (https://hackaday.com/2026/05/20/diy-potentiometer-is-a-great-teaching-aid/)

A DIY 3D Printing Filament Dryer
https://hackaday.com/2026/05/20/a-diy-3d-printing-filament-dryer/

In a recent video [Saša Karanović] revisits the DIY filament dryer that he gave a shot a couple of years ago. Back then he reused an existing filament dryer, adding a …read more (https://hackaday.com/2026/05/20/a-diy-3d-printing-filament-dryer/)

Building Festival Badges That Sync Themselves Up
https://hackaday.com/2026/05/20/building-festival-badges-that-sync-themselves-up/

Lots of music events these days hand out various glowing tchotchkes that flash and sync up with the performance. [Tony Goacher] has whipped up his own badges that can do …read more (https://hackaday.com/2026/05/20/building-festival-badges-that-sync-themselves-up/)

Investigating the Health Impacts of UFPs and VOCs from FDM Printers
https://hackaday.com/2026/05/20/investigating-the-health-impacts-of-ufps-and-vocs-from-fdm-printers/

FDM 3D printing is fairly messy on a molecular scale, with the filament being heated up to temperatures high enough to melt it, which produces ultra-fine particles (UFPs) and volatile …read more (https://hackaday.com/2026/05/20/investigating-the-health-impacts-of-ufps-and-vocs-from-fdm-printers/)

Unlocking the True Power of a MacBook Neo By Cooling It
https://hackaday.com/2026/05/20/unlocking-the-true-power-of-a-macbook-neo-by-cooling-it/

Mobile devices generally have one Achilles’ heel when it comes to computing power: thermal throttling. Outside of bulky desktop and server systems, chips have to run at a fraction of …read more (https://hackaday.com/2026/05/20/unlocking-the-true-power-of-a-macbook-neo-by-cooling-it/)

Building a Better Automotive Rotary Controller
https://hackaday.com/2026/05/21/building-a-better-automotive-rotary-controller/

If you’ve ever spent time in a modern BMW, you’ve probably fussed about with the goofy iDrive controller. It’s a rotary knobbery slidery thing that just never really feels that …read more (https://hackaday.com/2026/05/21/building-a-better-automotive-rotary-controller/)