How Does a Rain Sensor Work and how to Interface it with Arduino?
When it comes to detecting certain changes in weather conditions, it's pretty unpredictable, and rainfall is one of the most unexpected parameters of weather. So in this article, we decided to Interface the Rain Sensor with an Arduino. The raindrop sensor also known as rain detector sensor is an easy-to-use device that can detect rainfall. It acts as a switch when raindrops fall on the sensor, other than that with slight tweaks in the code, it can also measure the intensity of the rainfall.
[original story: Circuit Digest]