The experiment is for switching an acoustic sounder as a rain alarm after a predetermine time. It may, however, be tinkered for a number of other applications. Needless to say, this is a simple ...

The rain sensor sends a LOW signal when water is detected. The buzzer sounds briefly to notify the user. The LCD displays a message: "It is raining" when rain is detected. "No rain" when the sensor is ...

Tilt sensors are essential components in security alarm systems today. Standalone tilt sensors sense tilt angle or movement. Tilt sensors can be implemented using mercury and roller ball technology, ...