This document describes the design and implementation of a microcontroller-based automatic irrigation system. The system uses a soil moisture sensor to measure the moisture level in the soil. When the moisture level drops below a threshold, the microcontroller activates a relay which turns on the water pump to irrigate the soil. When the moisture level rises above the threshold, the pump is turned off. The system helps irrigate crops efficiently and minimizes water wastage by avoiding over-watering. It eliminates the need for manual irrigation and can be switched to manual mode when required.

1. contents
ABSTRACTS
INTRODUCTION
PRESENT SCENARIO
BLOCK DIAGRAM
COMPONENTS
CIRCUIT DIAGRAM
OPERATION
DATA TABLE
APPLICATION
ADVANTAGES
CONCLUSION
REFERENCE

2. ABSTRACTS
 India, an agriculture oriented country.
 Depleting water resources.
 Smart and efficient way of irrigation.
 Microcontroller based automation.

3.  Microcontroller based automation.
 Soil moisture sensing.
 Relay based water pump operation.
 Adequate water supply.
INTRODUCTION

4. PRESENT SCENARIO
 Worst weather conditions.
 Land diversity.
 Depleting and uneven water resources.
 Frequent Power cuts.

5. BLOCKDIAGRAM
Arduino Relay
Water
pump
16*2 LCD Display
Sensor

6.  Arduino UNO microcontroller
 Soil moisture sensor
 Power Supply
 Relay
 LCD Display
COMPONENTS
 Water Pump
 Bread Board
 Rheostat
 Jumper Wire

7. 1. Arduino Uno 2.Water pump 3.Moisture sensor
5.Relay
4.LCD

8. Circuit diagram
Fig. 6

9. operation
Stops
LCD
display
Moisture
== LOW
Start
Check moisture level
Relay turns
Water Pump ON
Irrigation starts
Relay turns
Water Pump
OFF
Irrigation stops
NO
YES

10. Sl no. Moisture level Resistance value Water pump
status
01. <50% (LOW) HIGH ON
02. >50% (HIGH) LOW OFF
DATA TABLE

11. APPLICATION
Irrigation in field
Irrigation in park, garden
Very efficient for paddy
Water sprinklers

12. Easy to design and install
Low cost and reliable circuit.
Complete elimination of manpower.
System can be switched into manual
mode whenever required.
Mainly it eliminate hazards.
ADVANTAGES

13. CONCLUSION
As water supplies become scarce and polluted, there is a need to
Irrigate more efficiently in order to minimize water wastage.

14. Reference
[1] Mr. X. “Automatic Irrigation System using an Arduino Uno.” Circuit Digest
https://circuitdigest.com/microcontroller-projects/automatic-irrigation-system-using-arduino-uno (accessed: Dec
10 2021)
[2] Administrator “Auto Irrigation System using Soil Moisture Sensor and PIC Microcontroller” Electronics Hub
https://www.electronicshub.org/auto-irrigation-system-using-soil-moisture-sensor-and-pic-microcontroller/
(accessed: Dec 10 2021)
[3] “3 Ways to Automatic Plan Irrigation System using Microcontroller” Elprocus
https://www.elprocus.com/microcontroller-based-automatic-irrigation-system/ (accessed: Dec 10 2021)
[4] Smartkembo discovery science, Tanzania. Automatic smart irrigation system project: (Oct 1 2021). Accessed:
Dec 10 2021. [Online Video].
Available: https://www.youtube.com/watch?v=oHBkS2MxDKY