Web Server Based Weather Monitor using DHT 11 & Rain Sensor

In this project, we’ll learn how to make a featured weather station using an ESP8266, DHT11 and Rain sensors.


The rain sensor module is Vary easy tool for rain detection. It can be used as a switch when raindrop falls through the raining board and also for measuring rainfall intensity. The module features, a rain board and the control board that is separate for more convenience, power indicator LED and an adjustable sensitivity though a potentiometer.

Raindrop sensor is basically a board on which nickel is coated in the form of lines. It works on the principal of resistance. When there is no rain drop on board. Resistance is high so we gets high voltage according to V=IR. When rain drop present it reduces the resistance because water is conductor of electricity and presence of water connects nickel lines in parallel so reduced resistance and reduced voltage drop across it.

It consists of two parts one is a black board with nickel layers on it and other is an integrated chip provided with some output pins.Board has 2 out