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Arduino Mega 2560 Smart Home Automation System with Sensor Integration

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Circuit Documentation

Summary

This circuit is designed using an Arduino Mega 2560 microcontroller to interface with various sensors and actuators. The circuit includes temperature and humidity sensors, a light sensor, an LCD display, pushbuttons, a relay module, and other components. The Arduino Mega 2560 reads data from the sensors and controls the actuators based on the sensor inputs.

Component List

  1. Arduino Mega 2560

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

  2. DHT 11

    • Description: A temperature and humidity sensor.
    • Pins: VCC, GND, DATA

  3. BH1750

    • Description: A light intensity sensor.
    • Pins: VCC, GND, SCL, SDA, ADDR

  4. Temperature Sensor (LM35)

    • Description: An analog temperature sensor.
    • Pins: +Vs, Vout, GND

  5. LCD Display (16 pin)

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

  6. Pushbutton

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

  7. MCB

    • Description: Miniature Circuit Breaker.
    • Pins: IN, OUT

  8. Fí Relé 2

    • Description: Residual-current device (RCD).
    • Pins: None

  9. Eloszto +

    • Description: Positive power distribution block.
    • Pins: None

  10. Eloszto -

    • Description: Negative power distribution block.
    • Pins: None

  11. Eloszto Föld

    • Description: Ground distribution block.
    • Pins: None

  12. GND

    • Description: Ground connection.
    • Pins: GND

  13. Fűtőkábel

    • Description: Heating cable.
    • Pins: None

  14. Lámpa

    • Description: Lamp.
    • Pins: -, +, GND

  15. Szellőző

    • Description: Ventilator.
    • Pins: GND, +

  16. Power Jack

    • Description: Power jack for external power supply.
    • Pins: POSITIF, NEGATIF

  17. Water Level Sensor

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

  18. Water Pump

    • Description: Water pump.
    • Pins: positive, negative

  19. Infra Panel 50 W

    • Description: Infrared heating panel.
    • Pins: -, +

  20. Siemens DIN-sín tápellátás

    • Description: DIN rail power supply.
    • Pins: +, -

  21. Potentiometer

    • Description: Variable resistor.
    • Pins: GND, Output, VCC

  22. 8 Channel Relay JD-VCC

    • Description: Relay module with 8 channels.
    • Pins: JD-VCC, VCC, GND, In1-In8, IN1_NC, IN1_COM, IN1_NO, IN2_NC, IN2_COM, IN2_NO, IN3_NC, IN3_COM, IN3_NO, IN4_NC, IN4_COM, IN4_NO, IN5_NC, IN5_COM, IN5_NO, IN6_NC, IN6_COM, IN6_NO, IN7_NC, IN7_COM, IN7_NO, IN8_NC, IN8_COM, IN8_NO

  23. Capasitive Soil Moisture Sensor V1.2

    • Description: Capacitive soil moisture sensor.
    • Pins: GND, VCC, AOUT

  24. 3xAABattery

    • Description: Battery pack with 3 AA batteries.
    • Pins: VCC, GND

  25. Regulator Stepdown DC XL4015 CC CV

    • Description: DC-DC step-down voltage regulator.
    • Pins: IN +, IN -, OUT +, OUT -

Wiring Details

Arduino Mega 2560

DHT 11

BH1750

Temperature Sensor (LM35)

LCD Display (16 pin)

Pushbutton

8 Channel Relay JD-VCC

Potentiometer