A Bluetooth transmitter lets you play music from your devices in an older car, and usually adds USB charging, too. Pho ...

John Deacon, the renowned bassist of Queen, is known for his reserved demeanor and exceptional musical talent. Beyond the ...

Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accuracy, and a frequency range from 20 Hz to more than 2 MHz.

If you are under a certain age, you might not know the initialism VTVM. It stands for vacuum tube voltmeter. At first glance, you might just think that was shorthand for “old voltmeter” but ...

[Emilio Ficara] [built himself an Internet-connected MQTT multimeter](http://ficara.altervista.org/) (translated from Italian by robots). Or maybe we should say that ...