Here’s something fun from [Chad Kapper] over on HackMakeMod: Escape Room Lockbox with the Cheap Yellow Display. You may have heard of the “cheap yellow display” (CYD), so-called due to the board’s ...

From ancient compasses to modern smartphones, magnetometers have quietly shaped how we sense and navigate the world. Let us explore the fundamentals behind these field-detecting devices. Magnetic ...

As part of a programme to investigate geomagnetic micropulsations, the Pacific Naval Laboratory has constructed a floating buoy for recording these signals at sea. A non-magnetic (fibre-glass) case ...