Circuit Documentation

Summary

This circuit is designed to interface various sensors and actuators with an Arduino UNO microcontroller. The circuit includes a power supply, a motor driver for controlling a fan, a piezo buzzer for audio feedback, a rotary encoder for user input, a DHT11 sensor for temperature and humidity readings, a GP2Y1010AU0F dust sensor, and an LCD display for outputting information. A rocker switch is included for power control. The Arduino UNO serves as the central processing unit, interfacing with all components and managing control logic and data acquisition.

Component List

12v Power Supply

• Provides the main voltage source for the circuit.

Piezo Buzzer

• Acts as an audio signaling device.

L298N DC Motor Driver

• Controls the speed and direction of the fan.

Rotary Encoder

• Allows the user to input rotational data into the system.

Rocker Switch

• Serves as an on/off switch for the circuit.

DHT11

• Measures temperature and humidity for environmental monitoring.

MKE-M07 LCD1602 I2C

• Displays information such as sensor readings and system status.

Arduino UNO

• The main microcontroller board that runs the embedded code and interfaces with all components.

GP2Y1010AU0F

• An optical dust sensor for detecting fine particulate matter.

Fan

• An actuator for creating airflow, controlled by the motor driver.

Wiring Details

12v Power Supply

• + to Arduino UNO 3.3V
• - to Arduino UNO GND

Piezo Buzzer

• pin 1 to Arduino UNO D9
• pin 2 to Arduino UNO GND

L298N DC Motor Driver

• OUT1 to Fan GND
• OUT2 to Fan 5V
• 12V not connected
• GND to Arduino UNO GND
• 5V to Arduino UNO Vin
• OUT3 not connected
• OUT4 not connected
• 5V-ENA-JMP-I not connected
• 5V-ENA-JMP-O not connected
• +5V-J1 not connected
• +5V-J2 not connected
• ENA not connected
• IN1 not connected
• IN2 not connected
• IN3 to Arduino UNO D11
• IN4 to Arduino UNO D12
• ENB to Arduino UNO D5

Rotary Encoder

• clk to Arduino UNO D2
• dt to Arduino UNO D3
• sw to Arduino UNO D7
• gnd to Arduino UNO GND
• + to Arduino UNO 5V

Rocker Switch

• output to Arduino UNO GND
• input to Arduino UNO 5V

DHT11

• DATA to Arduino UNO D6
• GND to Arduino UNO GND
• VCC to Arduino UNO 5V

MKE-M07 LCD1602 I2C

• GND to Arduino UNO GND
• 5V to Arduino UNO 5V
• SDA to Arduino UNO A4
• SCL to Arduino UNO A5

GP2Y1010AU0F

• VCC to Arduino UNO 5V
• Vout to Arduino UNO A0
• S-GND to Arduino UNO GND
• LED to Arduino UNO D8
• LED-GND not connected
• V-LED not connected

Fan

• GND to L298N DC Motor Driver OUT1
• 5V to L298N DC Motor Driver OUT2

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:

}

Additional Notes (documentation.txt)

No additional documentation provided for the code.