[Dzl] and his rather serious looking son are metal detector enthusiasts ... This one differs by using an Arduino to read from the metal detecting coil. The circuit starts with an oscillator ...

Lightning is a powerful and seemingly mysterious force of nature, capable of releasing huge amounts of energy over relatively short ... circuit to detect some of those radio waves. An Arduino ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that ... regulator, and Arduino IDE compatibility. The code is an Arduino project for the Digispark Attiny85 to turn on a ...

One of the essential parts of any home security system is a door detector that lets you know ... The system here uses a cheap Arduino board, a few sensors, and a magnetic contact switch.