Automatic Irrigation System Using Soil Moisture Sensor Circuit Diagram

In its most basic form moisture sensor senses level of the soil moisture.

Automatic irrigation system using soil moisture sensor circuit diagram.

In this post we are going to construct an automated water irrigation system for small garden using arduino and soil moisture sensor. Here we are building a iot based irrigation system using esp8266 nodemcu module and dht11 sensor. Working of automatic irrigation system. Moisture sensor and motor water pump.

The smart irrigation system has wide scope to automate the complete irrigation system. Circuit diagram automatic irrigation system using arduino the soil moisture sensor module used here have two output pins digital output and analog output. The output from the probe of the moisture sensor is compared with a reference value using a lm393 comparator. This soil moisture sensor circuit can be used in many applications like automatic plant irrigation system greenhouse projects etc.

Schematic circuit diagram of automatic plant watering irrigation system according to this system there are two functional components in this project i e. If the soil moisture sensor is not available the following circuit can be used as an alternative. First of all when there is no moisture present in the soil there will be conduction between two probes of the soil sensor. This is very simple and interesting circuit for electronics lovers.

In this circuit we have used an npn transistor to detect soil moisture. This can be changed by implementing a pot in place of one of the resistors connected to the non inverting terminal of the comparator. The block diagram of automatic irrigation system on sensing soil moisture content project comprises three main components namely an 8051 microcontroller comparator and relay. The working of automatic irrigation system is very simple and easy to understand.

It will not only automatically irrigate the water based on the moisture level in the soil but also send the data to thingspeak server to keep track of the land condition. Introduction the proposed system can monitor the soil moisture level and when soil moisture goes below preset value the 12v dc pump will be triggered for predetermined period of time. In this project we are going to build a transistor based simple soil moisture detector circuit. Circuit design of auto irrigation system using soil moisture.

This project uses an 8051 microcontroller which is programmed in keil software. The circuit shown below has a fixed sensitivity.