BME280 I2C / SPI Pressure, Humidity & Temperature Sensor Module
BME280 I2C / SPI Pressure, Humidity & Temperature Sensor Module
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BME280 I2C / SPI Pressure, Humidity & Temperature Sensor Module
The BME280 is the most popular all-in-one environmental sensor for Arduino and IoT projects. A single module measures barometric pressure (±1hPa), relative humidity (±3%RH), and temperature (±1°C) simultaneously via I2C or SPI. Used in weather stations, altitude measurement, HVAC monitoring, and indoor air quality projects worldwide.
Key Specifications
- IC: Bosch BME280 | Interface: I2C (0x76/0x77) & SPI
- Pressure: 300–1100hPa, accuracy ±1hPa
- Humidity: 0–100%RH, accuracy ±3%RH
- Temperature: −40–85°C, accuracy ±1°C
- Supply voltage: 3.3–5V | Current: 3.6μA (1Hz sampling)
- Altitude resolution: ±1m (derived from pressure)
- Compliance: RoHS compliant
Why Choose This?
- ✅ 3-in-1 sensor — pressure + humidity + temperature in one module
- ✅ I2C and SPI — flexible interface options for any microcontroller
- ✅ Ultra-low power — 3.6μA at 1Hz, ideal for battery-powered IoT nodes
- ✅ Adafruit BME280 library — extensive Arduino community support
Typical Applications
- Arduino and ESP32 weather station
- Indoor air quality and HVAC monitoring
- Altitude measurement for drones and balloons
- IoT environmental monitoring nodes

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