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Arduino UNO-Based Smart Home Monitoring System with Wi-Fi Connectivity

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Circuit Documentation

Summary

This circuit integrates an Arduino UNO microcontroller with various sensors and modules, including an MPU6050 Accelerometer + Gyroscope, a Temperature Sensor (LM35), an ACS712 Current Sensor, a ZMPT101B Voltage Sensor, a 1 Channel Relay, an LCD screen, and an ESP8266 WiFi Module. The Arduino UNO serves as the central controller, interfacing with the sensors and modules to collect data and control outputs.

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. MPU6050 Accelerometer + Gyroscope (Wokwi Compatible)

    • Description: 6-axis motion tracking device.
    • Pins: INT, AD0, XCL, XDA, SDA, SCL, GND, VCC
  3. Temperature Sensor (LM35)

    • Description: Precision centigrade temperature sensor.
    • Pins: +Vs, Vout, GND
  4. ACS712 Current Sensor 5A 20A 30A

    • Description: Current sensor module.
    • Pins: 1, 2, GND, OUT, VCC
  5. ZMPT101B

    • Description: Voltage sensor module.
    • Pins: OUT, GND, VCC, NEUTRO, FASE
  6. 1 Channel Relay 5V

    • Description: Relay module for switching high voltage devices.
    • Pins: VCC, GND, IN, NC, COM, NO
  7. LCD screen 16x2 I2C

    • Description: 16x2 character LCD display with I2C interface.
    • Pins: SCL, SDA, VCC, GND
  8. ESP8266 ESP-201 WiFi Module

    • Description: WiFi module for wireless communication.
    • Pins: 3.3V, IO4, D3, D1, D0, CMD, CLK, D2, IO2, IO0, GND, IO5, T_OUT, RST, CHIP_EN, XPD, IO14, IO12, IO13, IO15, RX, TX

Wiring Details

Arduino UNO

MPU6050 Accelerometer + Gyroscope (Wokwi Compatible)

Temperature Sensor (LM35)

ACS712 Current Sensor 5A 20A 30A

ZMPT101B

1 Channel Relay 5V

LCD screen 16x2 I2C

ESP8266 ESP-201 WiFi Module

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 Documentation (documentation.txt)