He’s taken a large array of moving-coil panel meters and hooked them up to a microcontroller board that’s triggered by a PIR sensor. Normally the readings are random, but get too close to it ...

One of the best parts of building a coil gun is seeing just how fast you can get that slug to move through the air. [Daniel] built this speed meter to be able to see exactly that. It is comprised ...

Most people think you can check a small engine’s ignition system by removing the spark plug and grounding it while cranking the engine and watching for a spark. Nope. That just confirms that the ...

Euphemism for a house call from the police. Instead of demanding to be let in, police have been known to pretend to be from the water utility to coerce residents into opening their doors.

Check your operator’s manual if you’re unclear—the specs diagram will identify exactly where the coils are and the process to remove the cover. Trust the manufacturer’s advice. They built ...

You'll need the following things-- the test strips and the meter, lancing device and the lancet, bandages, alcohol swabs, and cotton balls. Wash your hands. Use warm water to get your blood flowing.

Kenya Power has announced to millions of Kenyans who rely on prepaid meters for electricity that they will need to update their token meters by August 31. While launching the ‘Update Token Meter ...

ALSO READ: Eskom calls on prepaid customers to update meters before November 24 To check whether your prepaid meter has been recoded or upgraded to Key Revision Number (KRN) 2 or if it’s still ...

The magic happens because of the AC condenser coils. Here, the refrigerator unit in your go-to seasonal appliance absorbs heat to make the air cooler. As air passes over the cool refrigerant ...

As part of a nationwide roll-out, every home in Britain should be offered a smart meter from their energy supplier by the end of 2025. But what is a smart meter and how do they work? Here's ...