BMP280 Sensor Module
BMP280 Sensor Module
High-Precision Pressure Temperature Altitude Sensor
The BMP280 Sensor Module is a compact barometric pressure and temperature sensor designed for high accuracy and low power consumption. It is commonly used in weather monitoring systems, drones, GPS navigation, and IoT devices to measure atmospheric pressure, temperature, and altitude.
Developed by Bosch Sensortec, the BMP280 is an upgraded version of the older BMP180 barometric pressure sensor, offering improved accuracy and lower power consumption.
Infographic Overview
Basic Specifications
Feature | Details |
Operating Voltage | 1.71V 3.6V |
Power Consumption | 2.7 A (low power mode) |
Pressure Range | 300 1100 hPa |
Pressure Accuracy | 1 hPa |
Altitude Resolution | ~1 meter |
Communication | I2C / SPI |
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Sensor Pin Configuration
Pin | Function |
VCC | Power supply |
GND | Ground |
SCL / SCK | Clock line |
SDA / SDI | Data line |
CSB | Chip select (SPI mode) |
SDO | SPI data output |
Working Principle
The BMP280 works using piezo-resistive pressure sensing technology.
Step-by-Step Process
1 Air pressure pushes on a electrical resistance of the sensor.3 The sensor converts the resistance change into digital pressure data.4 Built-in algorithms calculate temperature and altitude values.5 The data is sent to a microcontroller through I2C or SPI communication.
Sensor Module Layout
BMP280 Sensor Module BMP280 Sensor Chip (Pressure + Temp) Communication InterfaceI2C / SPI Proton Temperature Ambient temperature Atmospheric Pressure Air pressure in hPa Altitude Height above sea level (calculated from pressure)
Common Applications
Weather monitoring stations Drone altitude measurement Smartphone weather sensing GPS navigation systems Environmental monitoring IoT altitude measurement projects
Compatible Microcontrollers
The BMP280 module easily connects to many development boards:
Arduino Uno
ESP32
Arduino Nano
Raspberry Pi Small and lightweight module Supports both I2C and SPI communication Suitable for battery-powered IoT devices
Limitations
Cannot measure humidity Sensitive to sudden temperature changes Requires calibration for very accurate altitude readings
BMP280 vs Older Sensor
Example Project Idea
IoT Weather Monitoring Station
Components
BMP280 Sensor Module
<>WiFi Connection
Cloud Dashboard
Functions
Display temperature and pressure Calculate altitude Upload weather data to the cloud Real-time monit
Feature | BMP280 | BMP180 |
Accuracy | Higher | Moderate |
Power Consumption | Lower | Higher |
Pressure Range | 3001100 hPa | 3001100 hPa |
Temperature Range | Wider | Narrower |