The document details the development of an IoT-based smart irrigation system presented by students from Sonargaon University. It includes technical specifications of various components like moisture sensors, Arduino microcontrollers, Bluetooth modules, WiFi transceivers, and temperature/humidity sensors used in the system. The focus is on supporting effective plant care through automated irrigation based on soil moisture levels and environmental conditions.

1. IOT BASED SMART
IRRIGATION SYSTEM
SONARGAON UNIVERSITY (SU)

2. Supervised By
Iqbal Kabir
Lecturer
Department of EEE

3. Presented By
Name ID
Md.Rasel Ali EEE1603009095
Md. Naznur Alam Prodhan Leon EEE1603009096
Mahmudul Hasan EEE1603009115
Mahbub Hasan EEE1603009092
Md. Ekramul Islam EEE1603009113

4. Our Work On
SMART WATER
SYSTEM
WEATHER REPORT
AND ANALYSIS
PROTECT AND CARE

5. Block Diagram

6. Circuit Diagram

7. Moisture Sensor
This Moisture Sensor can be used to detect the moisture of soil or judge if there is water around the sensor, let the
plants in your garden reach out for human help. They can be very to use, just insert it into the soil and then read it.
If you are a gardener, you can use this sensor to know when your plants need to be watered.
Features
 Easy to Use
 2.0cmX6.0cm grove module
 Application Ideas
 Botanical gardening
 Water sensor

8. Arduino Uno
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory
32 KB (ATmega328) of which 0.5 KB
used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz

9. 20x4 Character LCD Display
Features:
 High contrast STN 20x4 character LCD
 White text on blue background
 Single +5.0V supply operation
 LED backlight
 5x8 dot characters
 HD44780 equivalent controller
 4 or 8 bit interface

10. Arduino Bluetooth Module (HC-05)
Features:
 Compatible with Arduino, Stamp, FPGA and many more!
 Plug and Play operation at 9600 baud
 Easily integrated into existing (9600 baud) projects without any need to modify
code!
 Includes: BT2S Slave, Easy-Pin Cable and Pin-out/Instruction Pamphlet
 *Requires Bluetooth enabled master device.
 Bluetooth module interface including VCC, GND, TXD, RXD, KEY pin
and LED Status pin-out (STATE).
 In open space effective distance is 10 meter, more than 10 meter is
also possible by using external antenna.
 Backplane set anti-reverse diode with 3.3V LDO input voltage of 3.6 ~~
6V unpaired current is about 30mA paired approximately 10mA input voltage
to prohibit more than 7V.

11. ESP8266 ESP-01 WIFI Wireless Transceiver
Send Receive LWIP AP+STA M70
Technical Specs:
 802.11 b / g / n Wi-Fi Direct (P2P), soft-AP
 Built-in TCP / IP protocol stack
 Built-in TR switch, balun, LNA, power amplifier and matching network
 Built-in PLL, voltage regulator and power management components
 802.11b mode + 19.5dBm output power
 Built-in temperature sensor Support antenna diversity
 off leakage current is less than 10uA
 Built-in low-power 32-bit CPU: can double as an application processor
 SDIO 2.0, SPI, UART STBC, 1×1 MIMO, 2×1 MIMO
 A-MPDU, A-MSDU aggregation and the 0.4 Within wake
 2ms, connect and transfer data packets
 standby power consumption of less than 1.0mW (DTIM3)

12. DHT22 Digital Temperature Humidity Sensor
The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a
capacitive humidity sensor and a thermistor to measure the surrounding air, and
spits out a digital signal on the data pin (no analog input pins needed).
◦ Power supply: 3- 5V.
◦ Current: 2.5mA max use of current during conversion (while requesting data).
◦ Humidity: 0 - 100%, ± 2%.
◦ Temperature: -40°C + 125°C, ± 0.5%.
◦ The sampling rate no more than 0.5 Hz (once every 2 seconds).