Rain Detector Circuit Diagram. When rain is falling the rain water will fall on the rain sensor which has aluminum wires on mica or bakelite sheet. Whenever there is a rain rain drops falls on the rain sensor and as you can see in the diagram of rain sensor water on rain sensor would short the point a and b.
The diagram shows a water detection circuit. The 555 timer ic which is configured in its astable mode will then activate the buzzer. Circuit diagram of rain detection circuit or sensor interfacing with pic microcontroller is shown below.
If no rain lcd will display no rain and it will also display the status of moderate rain and heavy rain according to intensity of rain.
Lcd is connected with portc of pic16f877a microcontroller which will display the status of rain. Rain alarm project circuit diagram. When rain is falling the rain water will fall on the rain sensor which has aluminum wires on mica or bakelite sheet. There are mainly two components on the circuits namely 555 timer ic rain sensor which plays a pivotal role in driving the circuit.
