Grove - Barometer Sensor (BMP085)

The Grove - Barometer Sensor (BMP085) module provides accurate measurement of atmospheric pressure and temperature. Although the Bosch BMP085 chip natively operates between 1.8 V and 3.6 V, this module includes a level-shifting circuit that ensures compatibility with both 3.3 V and 5 V logic levels, making it directly usable with Arduino, Seeeduino, and other Grove-compatible platforms.

Communication is handled via the standard I2C interface using the 4-pin Grove connector. The sensor covers a wide pressure range of 300 hPa to 1100 hPa, corresponding to altitudes from -500 m to +9000 m above sea level. It is particularly suitable for applications requiring precise pressure detection, such as GPS-assisted navigation, local weather forecasting, and vertical velocity tracking.

Specifications

• Chip: Bosch BMP085 (barometric pressure and temperature sensor)
• Supply Voltage: 1.8 V to 3.6 V (module compatible with 3.3 V and 5 V)
• Interface: I2C (4-pin Grove connector)
• Pressure Range: 300 hPa to 1100 hPa
• Accuracy: up to ±0.03 hPa (~0.25 m altitude resolution) in ultra-high resolution mode
• Current Consumption: 5 μA in standard mode (1 sample/sec)
• Fully factory calibrated

Typical Applications

• GPS navigation enhancement (pressure-assisted positioning)
• Precise meteorology and local weather forecasting
• Indoor and outdoor navigation (floor detection, altitude tracking)
• Vertical speed monitoring for sports and leisure activities

For Grove ecosystem beginners, please refer to the Grove Barometer Sensor Wiki for setup and wiring instructions.