Circuit Documentation

Summary

This circuit is designed to interface various components with an Arduino UNO microcontroller. The components include a water pump, a 5V relay, an HC-05 Bluetooth Module, an HC-SR04 Ultrasonic Sensor, a 16x2 LCD screen with I2C interface, and a buzzer. The circuit is likely intended for a system that requires distance measurement, wireless communication, and actuation of a water pump, with feedback provided through an LCD display and audible alerts via a buzzer.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• Provides GPIO pins, power supply pins, and communication interfaces

Water Pump

• An electromechanical device for moving water
• Requires a power source and is controlled by the relay

5V Relay

• An electrically operated switch
• Allows the Arduino to control higher power devices like the water pump

HC-05 Bluetooth Module

• A wireless communication module
• Enables Bluetooth connectivity for the circuit

HC-SR04 Ultrasonic Sensor

• A sensor for measuring distance via ultrasonic waves
• Provides distance measurements to the Arduino

LCD Screen 16x2 I2C

• An alphanumeric display with 16 characters per line and 2 lines
• Uses I2C communication to display information

Buzzer

• An audible signaling device
• Generates sound when powered

Wiring Details

Arduino UNO

• GND connected to the common ground net
• 5V supplies power to the VCC net
• D11 connected to the ECHO pin of the HC-SR04 Ultrasonic Sensor
• D12 connected to the TRIG pin of the HC-SR04 Ultrasonic Sensor
• D0 connected to the TXD pin of the HC-05 Bluetooth Module
• D1 connected to the RXD pin of the HC-05 Bluetooth Module
• A4 (SDA) connected to the SDA pin of the LCD screen 16x2 I2C
• A5 (SCL) connected to the SCL pin of the LCD screen 16x2 I2C
• D13 connected to the PIN pin of the buzzer
• D4 connected to the In pin of the 5V relay

Water Pump

• Positive connected to the Normally Open pin of the 5V relay
• Negative connected to the common ground net

5V Relay

• GND connected to the common ground net
• VCC connected to the VCC net
• In controlled by the D4 pin of the Arduino UNO
• Normally Open connected to the positive pin of the water pump

HC-05 Bluetooth Module

• VCC connected to the VCC net
• GND connected to the common ground net
• TXD connected to the D0 pin of the Arduino UNO
• RXD connected to the D1 pin of the Arduino UNO

HC-SR04 Ultrasonic Sensor

• VCC connected to the VCC net
• TRIG controlled by the D12 pin of the Arduino UNO
• ECHO connected to the D11 pin of the Arduino UNO
• GND connected to the common ground net

LCD Screen 16x2 I2C

• SCL connected to the A5 (SCL) pin of the Arduino UNO
• SDA connected to the A4 (SDA) pin of the Arduino UNO
• VCC connected to the VCC net
• GND connected to the common ground net

Buzzer

• PIN controlled by the D13 pin of the Arduino UNO
• GND connected to the common ground net

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Note: The provided code is a template and does not contain any functional code. It needs to be populated with the logic to control the components based on the requirements of the circuit's application.