In this circuit we have used an npn transistor to detect soil moisture.
Automatic irrigation system using soil moisture sensor block diagram.
The block diagram of this automatic plant irrigation system comprises three main components namely a microcontroller a motor driver circuit and a sensor circuit.
Then motor water pump supplies water to plants.
In its most basic form moisture sensor senses level of the soil moisture.
Automatic plant watering system circuit and working.
Schematic circuit diagram of automatic plant watering irrigation system.
Also lcd is used which is interfaced with microcontroller for displaying the moisture content of soil and water pump status.
In here the power source provided by the solar panel is being stored in a 12 v battery and then it is converted to dc to ac by the inverter.
In this project arduino is used for controlling the whole working of the circuit.
According to this system there are two functional components in this project i e.
It is an arduino based automatic plant watering system that uses a soil moisture sensor.
The working of the circuit is as follows.
Hence the system reduces human intervention and provides required irrigation to field.
The output of temperature sensor is given to microcontroller.
The moisture sensor just senses the moisture of the soil.
Block diagram of sensor based automatic drip irrigation system 1 temperature sensor.
The change in moisture is.
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.
The working of automatic irrigation system is very simple and easy to understand.
Working of automatic irrigation system.
This soil moisture sensor circuit can be used in many applications like automatic plant irrigation system greenhouse projects etc.
On receiving the signal the microcontroller produces an output that drives a relay and operates the water pump.
The idea of the project is to implement an automatic irrigation system by sensing the moisture of the soil.
Figure 2 1 block diagram of automatic irrigation system figure 2 1 is the block diagram of the automatic irrigation system.
In this project we are going to build a transistor based simple soil moisture detector circuit.
The circuit diagram of the automatic plant watering system is shown in fig.
The soil moisture sensor is inserted in the soil.
2 soil moisture sensor.
Temperature sensor has been used for sensing the temperature.
The author s prototype is shown in fig.
Depending on the quality of the sensor it must be inserted near the roots of the plant.
This process is done by a 555 timer.