Project 3: Rain Alert System

Overview

Utilize the Rain Sensor Module to monitor the rainfall trends in your farm with this rain sensor using ESP8266 through Blynk. 

Required components

In this tutorial, these are required components:

• NodeMCU ESP8266
•  Rain Sensor Module
•  3 x Female-to-Female Jumper

Circuit Diagram

Blynk setup

1. Use the following details for Virtual Pin Datastream.

2. Then, create a label widget for the dashboard.

3. To create a new device for this project, delete one previously created device, as Blynk's free account allows only a maximum of two devices.

Code

1. Copy and paste the code below in Arduino IDE.

2. Similar to the previous project, replace the Blynk and WiFi credentials.