This project demonstrates how to interface an ESP8266 microcontroller with a BMP280 pressure sensor. The BMP280 sensor measures atmospheric pressure, temperature, and altitude. These values are read from the sensor and displayed on the Serial Monitor.
- ESP8266 Microcontroller
- BMP280 Pressure Sensor
- Jumper Wires
- Connecting the BMP280 to ESP8266:
- Connect the BMP280 sensor's VCC pin to the 3.3V pin on the ESP8266.
- Connect the GND pin of the BMP280 to the GND pin of the ESP8266.
- Connect the SDA pin of the BMP280 to the SDA pin of the ESP8266.
- Connect the SCL pin of the BMP280 to the SCL pin of the ESP8266.
-
Setup:
- Open the Arduino IDE with ESP8266 board support installed.
- Install the required libraries:
Adafruit_SensorandAdafruit_BMP280. - Create a new sketch and paste the provided Arduino code.
- Connect the ESP8266 to your computer, select the appropriate board and port from the Tools menu.
- Upload the code to the ESP8266.
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Operation:
- After uploading the code, open the Serial Monitor (baud rate: 9600).
- Observe the pressure, temperature, and altitude values being printed to the Serial Monitor every 2 seconds.
- Weather Monitoring: Measure atmospheric pressure and temperature for weather forecasting.
- Altitude Measurement: Calculate altitude based on pressure readings.
- Environmental Monitoring: Track changes in environmental conditions over time.
- Sensor Address: The BMP280 can have I2C addresses 0x76 or 0x77. Ensure the correct address is used in the code.
- Sea Level Pressure: The altitude calculation assumes a sea level pressure of 1013.25 hPa. Adjust this value based on local conditions for more accurate altitude readings.
- Delay Between Readings: A delay of 2 seconds is used to prevent spamming the Serial Monitor with data.
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