4.1 Introduction to project

Aim of the Experiment :

To make Plant Monitoring System using NodeMCU.

Minimum Requirements:

• NodeMCU ESP8266

• Soil Moisture Sensor Module

• Water Pump Module

• Relay Module

• DHT11

• Jumper Wires

Working of Soil Moisture:

Soil moisture sensors (SMSs) measure soil moisture at the root zone and regulate the existing conventional irrigation timer, resulting in considerable water savings when installed and used properly. The pin configuration of this sensor is shown below. This sensor includes four pins which include the following.

• VCC pin is used for power

• A0 pin is an analog output

• D0 pin is a digital output

• GND pin is a Ground