The document describes a smart irrigation system using IoT that was presented in a seminar. The system aims to save water and reduce human intervention in agriculture by continuously monitoring soil moisture sensors and providing water automatically when needed. It uses an Arduino microcontroller, soil moisture sensor, LED, resistor, and water pump. The sensor measures moisture levels, which are compared to a threshold value set in the code. If the reading is above the threshold, the LED turns on and water is pumped to the crops. This smart system allows for more efficient irrigation to increase productivity while reducing water usage and costs.

1. A
Seminar
On
Smart Irrigation System
Using IoT
Submitted By: Submitted To :
Kritika Jain Department of ECE
(15EEAEC045) Govt. Engineering College, Ajmer

2. CONTENT
• ISRO
• Objectives
• System Hardware Design
• Layout
• Coding used
• Advantages
• Conclusion

3. ISRO: Indian Space Research Organization
ISRO was formed on Independence Day, 1969.
SLV-3 was India’s first indigenous satellite.
ISRO developed BHUVAN, web based 3D satellite
imagery tool-Indian Incarnation of Google Earth.
ISRO has 13 Centers all across India.
ISRO’s Mars mission is the cheapest so far.

5. Objectives
To save water and reduce human
intervention in the agriculture field.
Continuously monitoring the status of soil
through sensors and provide signal for
taking necessary action.
To get the output of the sensor and provide
water to crop.
To observe parameters for better yield.

6. System Hardware Design

7. The hardware system consists of:
1. Arduino Uno
2. Soil moisture sensor
3. Extension board
4. LED
5. 10k resistor
6.Water Pump

8. Arduino UNO...
The Arduino Uno R3 is a
microcontroller board
based on
the ATmega328.
 It has 14 digital
input/output pins, 6
analog inputs, a
16 MHz crystal oscillator,
a USB connection, a
power jack, an ICSP
header, and a reset
button.

9. Soil Moisture Sensor...
The sensor includes a
potentiometer to set
the desired moisture
threshold.
If measured moisture
value>threshold,
output is high and LED
blinks and vice versa.
The output is
connected to a
microcontroller.

10. LED and Resistor...
A light-emitting
diode (LED) is a two-
lead semiconductor li
ght source. It is a p–n
junction diode that
emits light when
activated.
While the resistor is
used to provide to
load.

11. Layout...

12. CODING USED
• const int VAL_PROBE = 0;
• const int MOISTURE_LEVEL = 700;
•
•
• void setup() {
• Serial.begin(9600);
• pinMode(13,OUTPUT);
• pinMode(7,OUTPUT);
•
• // put your setup code here, to run once:
•
• }
• void LedState(int state)
• {
• digitalWrite(7,state);
•
• }
• void loop() {
• int moisture = analogRead(VAL_PROBE);

13. • Serial.print("Moisture = ");
• Serial.println(moisture);
• if(moisture>MOISTURE_LEVEL)
• {
• LedState(HIGH);
• digitalWrite(13,LOW);
• }
• else
• {
• LedState(LOW);
• digitalWrite(13,HIGH);
• }
• delay(500);
• }

15. System uses sensors to measure the
moisture parameter of the soil.
Outputs of the sensors measured are
analog in nature so the system makes use
of ADC which is inbuilt in microcontroller.
The measured value from the sensor is
compared with the threshold value we
have provided.
According to the value the water is
provided to the plant, if needed.

16. Advantages
• Increase in productivity
• Reduced water consumption
• Safe
• No manpower required
• Reduce soil erosion and nutrient leaching
• Require smaller water source

17. Conclusion
The smart irrigation system is feasible and cost
effective.
The irrigation system allows cultivation in
places with water security thereby improving
sustainability.
It proves that the use of water can be
diminished.

18. References
• Neonil123-gist.github.com
• Tope G. Patel 2014 Journal of Current
engineering and research.