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Wi-Fi Controlled Weather Station with OLED Display and Buzzer

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Circuit Documentation

Summary

This circuit is designed to monitor temperature and humidity using a DHT11 sensor, display the readings on an OLED screen, and provide visual and auditory alerts using LEDs and a buzzer. The circuit is controlled by an ESP8266 NodeMCU microcontroller.

Component List

  1. DHT11 Humidity and Temperature Sensor

    • Pins: VDD, DATA, NULL, GND
    • Description: Measures temperature and humidity.

  2. Buzzer

    • Pins: PIN, GND
    • Description: Provides auditory alerts.

  3. OLED 1.3" Display

    • Pins: GND, VCC, SCL, SDA
    • Description: Displays temperature and humidity readings.

  4. LED: Two Pin (Red)

    • Pins: Cathode, Anode
    • Description: Provides visual alerts.

  5. LED: Two Pin (Green)

    • Pins: Cathode, Anode
    • Description: Provides visual alerts.

  6. Resistor (200 Ohms)

    • Pins: Pin1, Pin2
    • Description: Limits current to LEDs.

  7. ESP8266 NodeMCU

    • Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN
    • Description: Microcontroller that controls the circuit.

Wiring Details

DHT11 Humidity and Temperature Sensor

Buzzer

OLED 1.3" Display

LED: Two Pin (Red)

LED: Two Pin (Green)

ESP8266 NodeMCU

Code

No code provided.