This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

In this experiment we are going to use a element called photoresistor. This sensor allows us to interact with the external environment, through intensity of light. The photoresistor is based on light ...

[electron_plumber] made an LED that can be blown out like a candle, and amazingly it requires no added sensors. The project uses an Arduino to ... are the LED and a resistor.