Note
As the sensor is quite sensitive to the environmental conditions, please DO NOT touch it with your fingers.
Grove - Temp&Humi&Barometer Sensor (BME280) is a breakout board for Bosch BMP280, a high-precision, low-power combined humidity, pressure, and temperature sensor.
Description
Grove - Temp&Humi&Barometer Sensor (BME280) is a breakout board for Bosch BMP280, a high-precision, low-power combined humidity, pressure, and temperature sensor. The air pressure can be measured in a range from 300 hPa to 1100hPa with ± 1.0 hPa accuracy, while the sensor works perfectly for temperatures between - 40 and 85 with an accuracy of ±1. As for the humidity, you can get a humidity value with an error of less than 3%. As the atmospheric pressure changes with altitude, it can also measure approximate altitude of a place.
We can calculate the altitude with ±1 meter accuracy, which makes it a precise altimeter as well. It can be connected to a microcontroller with I2C (integrated with Grove socket) or through SPI bus. We have also provided highly abstracted library to make this more product easier to use.
The BME280 is an upgraded version of BMP180, and BME280 gets dramatic improvements from BMP180. BME280 comes with a smaller footprint, lower power consumption, lower noise measurements, higher resolutions for pressure and temperature, lower RMS noise, newly added SPI bus, more measuring modes, higher measuring rate, and newly added filter against environmental interference. Since the atmosphere pressure reading is affected by altitude and temperature, we have added compensation features. Hence, Grove - Temp&Humi&Barometer Sensor (BME280) will be more reliable in providing precise temperature, atmospheric pressure values, humidity and approximate altitude data.
Application
Enhancement of GPS navigation
Outdoor/indoor navigation
Weather forecast
Home automation and control
IoT device
Barometer
Specifications
Dimensions
40 (length) × 20 (width) mm
Weight
3.2 g (for breakout board), 9.3 g for whole package each piece
Battery
Exclude
Input voltage
3.3V or 5V
I/O voltage
3.3V or 5V
Operating current
0.4 mA
Atmospheric pressure sensor measurement range
300 - 1100 hPa (1 hPa= one hundred Pa) with ± 1.0 hPa accuracy
Temperature sensor measurement range
-40 - 85, with ± 1.0 °C accuracy
Humidity sensor measurements range
0% - 100% relative humidity, with ±3% accuracy
Measurement modes
Piezo & Temperature, forced or periodic
Chip
BME280
Interface Bus
SPI, I2C (use either one of them)
I2C
0x76 (default) or 0x77
Hardware Overview
Part List
Grove - Temp&Humi&Barometer Sensor (BME280)
*1
Grove - Cable
*1