Grove - Temp&Humi&Barometer Sensor (BME280)

The Grove - Temp & Humidity & Barometer Sensor (BME280). It is based on their BME280 sensor, which is superior to the BMP280. The module provides precise measurement of barometric pressure, humidity and temperature in the environment. The air pressure can be measured in a range from 300hPa to 1100hPa with ±1.0 hPa absolute accuracy. As for the temperature the sensor works perfectly for temperatures between -40 and 85 degrees celcius with an accuracy of ±1 degree. As for the humidity, you can get a humidity value with a deviation of less than 3%.

Owing to its high accuracy on measuring the pressure, and the pressure changes with altitude, we can calculate the altitude with ±1 meter accuracy, which makes it a precise altimeter as well.

Another great thing about this module is that  you don’t even need to worry about the I2C collisions as it provides both I2C and SPI interfaces. To use SPI, simply de-solder the pads on the back. If you go with I2C, the board also provides 2 I2C addresses for you to select as you want.

Specifications

• High accuracy, absolute accuracy of ±1.0 hPa for pressure measurement, ±1 accuracy for temperature measurement and 3% for humidity
• Easy-to-use Grove Compatible Interface
• Supports both I2C and SPI communication
• Can be used as an altimeter with accuracy of ±1 meter
• Supply Voltage: 5V or 3.3V
• Current Consumption: 0.6 mA
• Barometric Pressure Measure
• Barometric Pressure Range: 300 – 1100 hPa
• Barometric Pressure Accuracy: ±1.0 hPa
• Humidity Accuracy: ±3%
• Temperature Measurement
• Temperature Measurement Range: -40 to 85 degrees celcius
• Temperature Measurement Accuracy: ±1 degrees celcius
• Interface: I2C and SPI
• Grove Port: I2C (selectable address at 0x77(default) and 0x76)
• Dimensions: 20mm x 40mm

Note

As the sensor is quite sensitive to the environmental conditions, please DO NOT touch it with your fingers.