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Arduino Mega 2560-Based Smart Evaporation Cooling System with LCD Display and Sensor Integration

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Circuit Documentation

Summary

This circuit is an advanced control system utilizing an Arduino Mega 2560 microcontroller. It integrates various sensors, LEDs, a stepper motor, an LCD display, and other components to create a comprehensive system for monitoring and controlling environmental conditions. The system reads temperature and humidity data, controls a stepper motor for vent adjustment, and displays information on an LCD screen. It also includes pushbuttons for user interaction and LEDs for status indication.

Component List

  1. Arduino Mega 2560

    • Description: Microcontroller board based on the ATmega2560.
    • Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, AREF, SDA, SCL.

  2. LCD Display (16 pin)

    • Description: 16x2 character LCD display.
    • Pins: VSS, VDD, VO, RS, R_W, E, DB0-DB7, A, K.

  3. LED: Two Pin (red)

    • Description: Red LED.
    • Pins: Cathode, Anode.

  4. LED: Two Pin (blue)

    • Description: Blue LED.
    • Pins: Cathode, Anode.

  5. LED: Two Pin (green)

    • Description: Green LED.
    • Pins: Cathode, Anode.

  6. LED: Two Pin (yellow)

    • Description: Yellow LED.
    • Pins: Cathode, Anode.

  7. Resistor (330 Ohms)

    • Description: Resistor with 330 Ohms resistance.
    • Pins: Pin1, Pin2.

  8. Pushbutton

    • Description: Pushbutton switch.
    • Pins: Pin 1 (in), Pin 2 (in), Pin 3 (out), Pin 4 (out).

  9. Rotary Potentiometer

    • Description: 10k Ohm rotary potentiometer.
    • Pins: Leg1, Wiper, Leg2.

  10. KY-015 DHT11 Temperature-Humidity sensor module

    • Description: Temperature and humidity sensor.
    • Pins: VCC, GND, DOUT.

  11. Water Level Sensor

    • Description: Water level sensor.
    • Pins: SIG, VCC, GND.

  12. 28BYJ-48 Stepper Motor

    • Description: Stepper motor.
    • Pins: BLUE, PINK, YELLOW, ORANGE, RED.

  13. ULN 2003

    • Description: Darlington transistor array.
    • Pins: IN1-IN7, GND, +, COIL1-COIL5.

  14. MB102 Breadboard Power Supply Module 3.3V/5V

    • Description: Power supply module for breadboards.
    • Pins: VCC, GND, 3.3V, 5V.

  15. 9V Battery

    • Description: 9V battery.
    • Pins: +, -.

  16. L293D Motor Driver

    • Description: Motor driver IC.
    • Pins: Enable 1, Input 1, Output 1, GND, Output 2, Input 2, VS, VSS, Input 4, Output 4, Output 3, Input 3, Enable 2.

  17. DC Motor

    • Description: DC motor.
    • Pins: Pin 1, Pin 2.

  18. DS1307 RTC (Wokwi Compatible)

    • Description: Real-time clock module.
    • Pins: GND, 5V, SDA, SCL, SQW.

Wiring Details

Arduino Mega 2560

LCD Display (16 pin)

LED: Two Pin (red)

LED: Two Pin (blue)

LED: Two Pin (green)

LED: Two Pin (yellow)

Resistor (330 Ohms)

Pushbutton

Rotary Potentiometer

KY-015 DHT11 Temperature-Humidity sensor module

Water Level Sensor

28BYJ-48 Stepper Motor

ULN 2003