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Arduino UNO-Based Smart Irrigation System with Bluetooth Control

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Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfaced with various sensors and actuators through an Arduino Sensor Shield v5.0. The components include an ultrasonic sensor, a Bluetooth module, a DC motor driver, a relay module, an IR sensor, a servo motor, a water pump, and a 4xAA battery pack. The circuit is designed to perform various sensing and actuation tasks, controlled by the Arduino UNO.

Component List

  1. Arduino UNO

    • Description: Microcontroller board based on the ATmega328P.
    • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

  2. HC-SR04 Ultrasonic Sensor

    • Description: Ultrasonic distance sensor.
    • Pins: VCC, TRIG, ECHO, GND

  3. Arduino Sensor Shield v5.0

    • Description: Expansion shield for Arduino UNO to simplify sensor and actuator connections.
    • Pins: VCC, SD-VCC, SD-GND, SD-D11, SD-D10, SD-D13, SD-D12, URF01-VCC, URF01-A0, URF01-A1, URF01-GND, GND, SEL1, SEL2, A0-SIG, A0-VCC, A0-GND, A1-SIG, A1-VCC, A1-GND, A2-SIG, A2-VCC, A2-GND, A3-SIG, A3-VCC, A3-GND, A4-SIG, A4-VCC, A4-GND, A5-SIG, A5-VCC, A5-GND, IIC-SCL, IIC-SDA, IIC-GND, IIC-VCC, COM-TX, COM-RX, COM-GND, COM-VCC, APC220-, APC220-D0, APC220-D1, APC220-VCC, APC220-GND, BLUETOOTH-3V3, BLUETOOTH-GND, BLUETOOTH-D0, BLUETOOTH-D1, BLUETOOTH-VCC, AREF-S, AREF-V, AREF-G, GND-S, GND-V, GND-G, 13-S, 13-V, 13-G, 12-S, 12-V, 12-G, 11-S, 11-V, 11-G, 10-S, 10-V, 10-G, 9-S, 9-V, 9-G, 8-S, 8-V, 8-G, 7-S, 7-V, 7-G, 6-S, 6-V, 6-G, 5-S, 5-V, 5-G, 4-S, 4-V, 4-G, 3-S, 3-V, 3-G, 2-S, 2-V, 2-G, 1-S, 1-V, 1-G, 0-S, 0-V, 0-G, ParallelLCD-VCC, ParallelLCD-D13, ParallelLCD-GND, ParallelLCD-D12, ParallelLCD-D2, ParallelLCD-D11, ParallelLCD-D3, ParallelLCD-D10, ParallelLCD-D4, ParallelLCD-D9, ParallelLCD-D5, ParallelLCD-D8, ParallelLCD-D6, ParallelLCD-D7, SerialLCD-D4, SerialLCD-VCC, SerialLCD-D3, SerialLCD-, SerialLCD-D2, SerialLCD-GND

  4. Servo

    • Description: Actuator for precise control of angular position.
    • Pins: GND, VCC, PWM

  5. Water Pump

    • Description: Pump for moving water.
    • Pins: positive, negative

  6. Relay Module 5V-30V

    • Description: Relay module for switching high voltage devices.
    • Pins: common contact, normally open, normally closed, trigger, V-, V+

  7. 4 Channel IR Sensor

    • Description: Infrared sensor module with four channels.
    • Pins: VSV, GND, In1, In2, In3, In4

  8. 4xAA Battery Pack

    • Description: Battery pack providing power from four AA batteries.
    • Pins: POS, NEG

  9. L298N DC Motor Driver

    • Description: Dual H-Bridge motor driver.
    • Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

  10. HC-05 Bluetooth Module

    • Description: Bluetooth module for wireless communication.
    • Pins: Key, VCC, GND, TXD, RXD, State

Wiring Details

HC-SR04 Ultrasonic Sensor

HC-05 Bluetooth Module

L298N DC Motor Driver

Relay Module 5V-30V

4 Channel IR Sensor

Servo

Code Documentation

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino UNO. The setup() function is where you initialize your components and settings, and the loop() function is where the main logic of your program runs continuously.