Learn how to make a simple electric doorbell at home in this step-by-step tutorial. Using everyday materials like cardboard, a DC motor, battery, metal bowls, a clothespeg switch, and basic wiring, ...

Discover how to build a simple wireless power transfer system at home using readily available components like enameled copper wire, an LED, a 2N2222A transistor, and a 9V battery. This step-by-step ...

The Ting Smart Sensor quietly monitors your home wiring for potential hazards. Here's how it fared in my house.

Testing a regulator all the way down to zero volts to see how it behaves and finding an output level, below which bad things ...