ESP8266 Temperature and Humidity Sensor Module (DHT11/DHT22) Project

This project demonstrates how to interface a DHT11 or DHT22 temperature and humidity sensor with an ESP8266 microcontroller to measure and display temperature and humidity readings. These sensors are widely used in various applications requiring environmental monitoring.

Components Needed

Circuit Diagram

Circuit Setup

1.Connecting the DHT Sensor to ESP8266:

Connect the VCC pin of the DHT sensor to the 3.3V pin on the ESP8266.

Connect the GND pin of the DHT sensor to a ground (GND) pin on the ESP8266.

Connect the data pin of the DHT sensor to the GPIO pin D4 on the ESP8266.

If using the DHT22 sensor, ensure the sensor's type is defined correctly in the code.

Instructions

1.Setup:

Initialize serial communication at a baud rate of 9600 for debugging purposes.

Initialize the DHT sensor object with the correct pin and sensor type using DHT dht(dhtPin, DHTTYPE).

Begin sensor operation in the setup() function using dht.begin().

2.operation:

In the loop() function:

Applications

Environmental Monitoring: Measure and log temperature and humidity data for climate control and environmental studies.

Home Automation: Integrate temperature and humidity sensors in home automation systems for heating, ventilation, and air conditioning (HVAC) control.

Weather Stations: Use temperature and humidity sensors in DIY weather stations to monitor local weather conditions.

Notes

Sensor Selection: Ensure the correct sensor type (DHT11 or DHT22) is defined in the code.

Delay Between Readings: The DHT sensor requires a delay between readings to provide accurate data.

Serial Output: Use the Serial Monitor to observe temperature and humidity readings and verify the correct operation of the sensor.