Making a mountain bike data acquisition system
https://hackaday.com/2026/01/18/making-a-mountain-bike-data-acquisition-system/

Professional mountain bike racing is a rather bizarre sport. At the highest level, times between podiums will be less than a second, and countless hours of training and engineering go …read more (https://hackaday.com/2026/01/18/making-a-mountain-bike-data-acquisition-system/)

Accurately Aiming Audio with an Ultrasonic Array
https://hackaday.com/2026/01/18/accurately-aiming-audio-with-an-ultrasonic-array/

When [Electron Impressions] used a powerful ultrasonic array to project a narrow beam of sound toward a target, he described it as potentially useful in getting someone’s attention from across …read more (https://hackaday.com/2026/01/18/accurately-aiming-audio-with-an-ultrasonic-array/)

Hackaday Links: January 18, 2026
https://hackaday.com/2026/01/18/hackaday-links-january-18-2026/

Looking for a unique vacation spot? Have at least $10 million USD burning a hole in your pocket? If so, then you’re just the sort of customer the rather suspiciously …read more (https://hackaday.com/2026/01/18/hackaday-links-january-18-2026/)

A Guide To Using Triacs For Switching AC
https://hackaday.com/2026/01/18/a-guide-to-using-triacs-for-switching-ac/

For switching high-powered loads from a microcontroller, or for switching AC loads in general, most of us will reach into the parts bin and pull out a generic relay of …read more (https://hackaday.com/2026/01/18/a-guide-to-using-triacs-for-switching-ac/)

Review and Demo of the Zoyi ZT-QB9 Smart Clamp Meter
https://hackaday.com/2026/01/18/review-and-demo-of-the-zoyi-zt-qb9-smart-clamp-meter/

Over on YouTube [Kiss Analog] reviews the New Zoyi ZT-QB9 Smart Clamp meter. If you’re putting together an electronics lab from scratch you absolutely must get a multimeter to start. …read more (https://hackaday.com/2026/01/18/review-and-demo-of-the-zoyi-zt-qb9-smart-clamp-meter/)

TV Remote Uses Floppy Disks
https://hackaday.com/2026/01/19/tv-remote-uses-floppy-disks/

Famously, the save icon on most computer user interfaces references a fairly obsolete piece of technology: the venerable floppy disk. It’s likely that most people below the age of about …read more (https://hackaday.com/2026/01/19/tv-remote-uses-floppy-disks/)

Washington State Bill Seeks to Add Firearms Detection to 3D Printers
https://hackaday.com/2026/01/19/washington-state-bill-seeks-to-add-firearms-detection-to-3d-printers/

Washington State’s House Bill 2321 is currently causing a bit of an uproar, as it seeks to add blocking technologies to 3D printers, in order to prevent them from printing …read more (https://hackaday.com/2026/01/19/washington-state-bill-seeks-to-add-firearms-detection-to-3d-printers/)