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BMP280 Barometric Pressure & Temperature Sensor Module — I2C/SPI
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BMP280 Barometric Pressure & Temperature Sensor Module — I2C/SPI
The BMP280 from Bosch Sensortec is a high-precision barometric pressure and temperature sensor widely used in weather stations, altitude measurement, and drone flight controllers. With both I2C and SPI interfaces and ultra-low power consumption, it's the go-to upgrade from the BMP180 for any Arduino, ESP32, or STM32 project requiring accurate environmental sensing.
Technical Specifications
| Parameter | Value |
|---|---|
| IC | Bosch BMP280 |
| Supply Voltage | 3.3V – 5V DC (onboard regulator) |
| Interface | I2C & SPI |
| I2C Address | 0x76 or 0x77 (selectable) |
| Pressure Range | 300 – 1100 hPa |
| Pressure Accuracy | ±1 hPa (absolute), ±0.12 hPa (relative) |
| Temperature Range | -40°C to +85°C |
| Temperature Accuracy | ±0.5°C |
| Altitude Resolution | 0.16m |
| Current Consumption | 2.7 μA @ 1 Hz sampling |
Pinout
| Pin | Name | Description |
|---|---|---|
| VCC | Power | 3.3V or 5V Supply |
| GND | Ground | Ground |
| SCL | Clock | I2C Clock / SPI Clock (SCK) |
| SDA | Data | I2C Data / SPI MOSI |
| CSB | Chip Select | SPI Chip Select (tie to VCC for I2C) |
| SDO | Address Select | I2C address select / SPI MISO |
Key Features
- Measures both pressure (300–1100 hPa) and temperature (-40°C to +85°C)
- Dual interface: I2C and SPI — flexible integration
- Ultra-low power: 2.7 μA at 1 Hz — ideal for battery-powered devices
- Altitude resolution of 0.16m — excellent for drone and weather applications
- Compatible with Arduino, ESP32, STM32, Raspberry Pi
Applications
- Weather stations and environmental monitoring
- Altitude and elevation measurement
- Drone and UAV flight controllers
- Indoor navigation and floor detection
- IoT climate monitoring nodes