Digital Temperature/Humidity/Barometric Pressure Sensor Module Breakout BME280

Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for all sorts of weather/environmental sensing and can even be used in both I2C and SPI!

This precision sensor from Bosch is the best low-cost sensing solution for measuring humidity with ±3% accuracy, barometric pressure with ±1 hPa absolute accuraccy, and temperature with ±1.0°C accuracy. Because pressure changes with altitude, and the pressure measurements are so good, you can also use it as an altimeter with  ±1 meter accuracy!

Applications

•  Context awareness, e.g. skin detection, room change detection
•  Fitness monitoring / well-being
•  Warning regarding dryness or high temperatures
•  Measurement of volume and air flow
•  Home automation control
•  Control heating, ventilation, air conditioning (HVAC)
•  Internet of things
•  GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
•  Indoor navigation (change of floor detection, elevator detection)
•  Outdoor navigation, leisure and sports applications
•  Weather forecast
•  Vertical velocity indication (rise/sink speed)
• 1 pascal Pa =  0.001kilopascals kPa
• 1 hectopascal hPa =  0.10kilopascals kPa

BME280, the precision sensor from Bosch, is soldered onto PCB. Not only the pressure and the temperature, this sensor can measure humidity. It uses both I2C and SPI (supports 3-, 4-wire SPI) interface

• Supply Voltage: 3.8V-5V DC
• VDDIO interface voltage range:  1.2 V to 3.35 V
• Interface: I2C (up to 3.4MHz), SPI (up to 10 MHz)

•  Temperature:  -40 to +85°C
•  Humidity:  0-100%
•  Pressure:  300-1100 hPa

• Temperature:  0.01°C
• Humidity:  0.008%
•  Pressure:  0.18Pa

•  Temperature: ±1°C
•  Humidity: ±3%
•  Pressure: ±1Pa

• SDO LOW :  0x76
• SDO HIGH:  0x77

 

BME280   The BME280 is an integrated environmental sensor developed specifically for mobile applications where size and low power consumption are key design constraints. The unit combines individual high linearity, high accuracy sensors for pressure, humidity and temperature in an 8-pin metal-lid 2.5 x 2.5 x 0.93 mm³ LGA package, designed for low current consumption (3.6 μA @1Hz), long term stability and high EMC robustness.   The humidity sensor features an extremely fast response time which supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range. The pressure sensor is an absolute barometric pressure sensor with features exceptionally high accuracy and resolution at very low noise. The integrated temperature sensor has been optimized for very low noise and high resolution. It is primarily used for temperature compensation of the pressure and humidity sensors, and can also be used for estimating ambient temperature.   The BME280 supports a full suite of operating modes which provides the flexibility to optimize the device for power consumption, resolution and filter performance."

BME280

 

The BME280 is an integrated environmental sensor developed specifically for mobile applications where size and low power consumption are key design constraints. The unit combines individual high linearity, high accuracy sensors for pressure, humidity and temperature in an 8-pin metal-lid 2.5 x 2.5 x 0.93 mm³ LGA package, designed for low current consumption (3.6 μA @1Hz), long term stability and high EMC robustness.

 

The humidity sensor features an extremely fast response time which supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range. The pressure sensor is an absolute barometric pressure sensor with features exceptionally high accuracy and resolution at very low noise. The integrated temperature sensor has been optimized for very low noise and high resolution. It is primarily used for temperature compensation of the pressure and humidity sensors, and can also be used for estimating ambient temperature.

 

The BME280 supports a full suite of operating modes which provides the flexibility to optimize the device for power consumption, resolution and filter performance."

Applications

- Context awareness, e.g. skin detection, room change detection

- Fitness monitoring / well-being

- Warning regarding dryness or high temperatures

- Measurement of volume and air flow

- Home automation control

- Control heating, ventilation, air conditioning (HVAC)

- Internet of things

- GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)

- Indoor navigation (change of floor detection, elevator detection)

- Outdoor navigation, leisure and sports applications

- Weather forecast

 

- Vertical velocity indication (rise/sink speed)