Helium is inert, which makes it useful in a lot of different industries. But helium’s colorless and odorless non-reactivity also means traditional gas sensing methods don’t work. Specialized detectors exist, …read more (https://hackaday.com/2026/02/04/detecting-helium-leaks-with-sound-in-a-physics-based-sensor/)

Restoring the Soul of a 1940s Radio
https://hackaday.com/2026/02/04/restoring-the-soul-of-a-1940s-radio/

Although we do often see projects that take antiques and replace some or all of their components with modern equipment, we can also sympathize with the view that (when possible …read more (https://hackaday.com/2026/02/04/restoring-the-soul-of-a-1940s-radio/)

When Mains Networking Fails, Use Phone Wires
https://hackaday.com/2026/02/05/when-mains-networking-fails-use-phone-wires/

A quiet shift over the last couple of decades in many places has been the disappearance of the traditional copper phone line. First the corded landline phone was replaced by …read more (https://hackaday.com/2026/02/05/when-mains-networking-fails-use-phone-wires/)