BME280 I2C / SPI Pressure, Humidity & Temperature Sensor Module

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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