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1. Smart Irrigation
System
(Using Internet Of
Things)
Made By:
Ravi Shankar Singhal
0818cs181102

2. Content
 Why we need of Smart Irrigation
System
 Sensors Used
• Soil Sensor
• Jumper Wires
• NodeMCU
• Relay
• Water Motor Pump
• Humidity and Temperature Sensor
Pipe
BLYNK
Connection
Code
Advantage And Disadvantage

3. • Most of the farmers use large
portions of farming land and it
becomes very difficult to reach and
track each corner of large lands.
Sometime there is a possibility of
uneven water sprinkles. This result in
the bad quality crops which further
leads to financial losses. In this
scenario the Smart Irrigation System
using Latest IoT technology is helpful
and leads to ease of farming
• In 31 March 2018, three
farmers died due to electric shock at
the time of given watering to the
plants and so many case of electic
shock died farmers at the time of
given water to the plants.

4. Soil Moisture Sensor
• Soil moisture sensors measure the
volumetric water content in soil. Since the
direct gravimetric measurement of free soil
moisture requires removing, drying, and
weighing of a sample, soil moisture sensors
measure the volumetric water content
indirectly by using some other property of the
soil, such as electrical resistance, dielectric
constant, or interaction with neutrons, as a
proxy for the moisture content.
Latest Soil Moisture Sensor

5. Specifications:-
• Operating voltage: 3.3V~5V
• Dual output mode,analog output more accurate
• A fixed bolt hole for easy installation
• With power indicator (red) and digital switching output indicator (green)
• Having LM393 comparator chip, stable
• Panel PCB Dimension: Approx.3cm x 1.5cm
• Soil Probe Dimension: Approx. 6cm x 3cm
• Cable Length: Approx.21cm
• VCC: 3.3V-5V
• GND: GND
Old Soil Moisture Sensor

6. Jumper Wires
Jumper wires are simply wires that have connector pins at each end, allowing them to be used
to connect two points to each other without soldering. Jumper wires are typically used
with breadboards and other prototyping tools in order to make it easy to change a circuit as
needed. Fairly simple. In fact, it doesn’t get much more basic than jumper wires.
Types Of Jumper Wires
Jumper wires typically come in three versions: male-to-male, male-to-female and female-to-
female. The difference between each is in the end point of the wire. Male ends have a pin
protruding and can plug into things, while female ends do not and are used to plug things into.
Male-to-male jumper wires are the most common and what you likely will use most often. When
connecting two ports on a breadboard, a male-to-male wire is what you’ll need.

7. Types of Jumper Wire
Male to Female Female to Female Male to Male

8. NODEMCU (ESP8266)
• NodeMCU is an open
source LUA based firmware
developed for ESP8266 wifi chip.
By exploring functionality with
ESP8266 chip, NodeMCU
firmware comes with ESP8266
Development board/kit i.e.
NodeMCU Development board.
• NodeMCU Dev Kit/board
consist of ESP8266 wifi enabled
chip. The ESP8266 is a low-
cost Wi-Fi chip developed by
Espress if Systems with TCP/IP
protocol. For more information
about ESP8266, you can
refer ESP8266 WiFi Module.

9. Relay
• A standard and generally used relay is made
up of electromagnets which in general used as
a switch. Dictionary says that relay means the
act of passing something from one thing to
another, the same meaning can be applied to
this device because the signal received from
one side of the device controls the switching
operation on the other side.

10. Water Pump Motor
(Only for small projects)
• Specifications:
• Operating Voltage : 2.5 ~ 6V
• Operating Current : 130 ~ 220mA
• Flow Rate : 80 ~ 120 L/H
• Maximum Lift : 40 ~ 110 mm
• Continuous Working Life : 500 hours
• Driving Mode : DC, Magnetic Driving
• Material : Engineering Plastic
• Outlet Outside Diameter : 7.5 mm
• Outlet Inside Diameter : 5 mm

11. Humidity and Temperature Sensor
Specification
Supply Voltage: +5 V
Temperature range :0-50 °C error of ± 2 °C
Humidity :20-90% RH ± 5% RH error
Interface: Digital
This DHT11 Temperature and Humidity Sensor features a calibrated digital signal output with the temperature and
humidity sensor capability. It is integrated with a high-performance 8-bit microcontroller. Its technology ensures the
high reliability and excellent long-term stability. This sensor includes a resistive element and a sensor for wet NTC
temperature measuring devices. It has excellent quality, fast response, anti-interference ability and high
performance.

12. Pipe
Flexible PVC is a soft, flexible material that ranges in appearance from transparent
to opaque. PVC is manufactured with plasticizers, which confer rubbery properties
on the end product. By adjusting the type and amount of plasticizers, plastic
molders can achieve a large range of flexible compositions.
Since the plasticizers are small molecules, they can also “escape” the polymer more
easily, which is the reason why PVC (also called “vinyl”) is often cited as a health
and environmental hazard. This comes from chemicals called napthalates, which
are the real reason why PVC is soft.

13. Blynk App
• Pavel Baiborodin – Founder of Blynk
• Blynk is a Platform with IOS and Android apps to control
Arduino, Raspberry Pi and the likes over the Internet. It's a digital
dashboard where you can build a graphic interface for your
project by simply dragging and dropping widgets.
• Blynk is a new platform that allows you to quickly build
interfaces for controlling and monitoring your hardware projects
from your iOS and Android device. After downloading the Blynk
app, you can create a project dashboard and arrange buttons,
sliders, graphs, and other widgets onto the screen

14. Open Blynk App
After Registration
Create New Project
Name of your Project
Choose Your Device
If you want to Add
New Device

15. Create a button
Do Button Setting
Turn to push button
Select your pin from
Hardware in which
you connect
After all done tap on
play button(in which
circle)
Tap on button

16. Code for Blynk app
#include<Blynk.h>
#include<ESP8266WiFi.h>
# define LED 16
#define BLYNK_PRINT Serial
#include<BlynkSimpleEsp8266.h>
char auth[] ="c408aa477b30498cbb29c8a5f26696e9 ";
char ssid[] = "AndroidAP";
char pass[] ="qimo1234";
void setup() {
Serial.begin(115200);
Blynk.begin(auth,ssid,pass);
pinMode(LED,OUTPUT);
}
void loop() {
Blynk.run();
}

17. Connections
of Smart
Irrigation
System

18. Code of Smart Irrigation
System
#define BLYNK_PRINT Serial
#include<ESP8266WiFi.h>
#include<BlynkSimpleEsp8266.h>
char auth[] ="G0qFaAvAeW5_bU5JWUDT-fqEMhWWAPXr";
const int sensorPin = 4;
int sensorState = 0;
int lastState =0;
void setup() {
Serial.begin(9600);
Blynk.begin(auth,"AndroidAP","mere ko nahi pata");
pinMode(sensorPin,INPUT);
}
void loop() {
Blynk.run();
sensorState = digitalWrite(sensorPin);
Serial.println(sensorState);
if(sensorState==1 && lastState == 0 )

19. Serial.println("needs water, send notification");
Blynk.notify("I am very Thirsty");
lastState = 1;
delay(1000);
}
else if(sensorState == 1 && lastState==1 )
{
Serial.println("has not watered yet");
delay(1000);
}
else{
Serial.println("I am Full");
lastState=0;
delay(1000);
}
delay(1000);
}

20. Advantages of Smart irrigation System
1. to save water
2. Smart irrigation also deals with efficiencies in the delivery of the water. There are generally
four types of delivery: surface, sprinklers, trickle and subsurface methods.
3. It distributes water through irrigation ditches, letting gravity do the work.
4. Sprinklers distribute water through the air like rain and can be fixed or mobile.
5. Trickle irrigation spreads water very locally to the ground surface.
6. Controlling these two set points reduces the amount of water used by linking it to the
moisture level needed in the soil for a particular crop.
7. A particular land area is too dry and starting an irrigation routine or to stop irrigation when a
particular saturation point is met because a soil moisture level has been reached.
8. Use local soil moisture data drawn from sensors in the ground to support informed decisions
about watering schedules.

21. Dis-advantages of Smart irrigation System
1. Agriculture being a natural phenomenon relies mostly on nature, and man predict or control
nature let it be rain drought sunlight availability. pests control etc. So ever implementation IoT
system agriculture.
2. The smart agriculture need availability on internet continuously. Rural part of the developing
countries did not fulfill this requirements. Moreover internet is slower.
3. Fault sensor or data processing engines can cause faulty l decisions which may lead to over
use of water, fertilizers and other wastage of resources.
4. The smart farming based equipment require farmer to understand and learn the use of
technology. This is the major challenge in adopting smart agriculture framing at large scale
across the continues.
5. It also has some issues which have to be tracked properly in order to attain the full benefit of
it.
6. The current IoT systems are not scalable or reliable and the initial costs are high which the
farmers cannot afford.