Ever wanted to build your own weather station using Arduino? Then the BMP180 breakout board with precision sensor from Bosch might interest you. The digital sensor on the board precisely measures the changes in barometric pressure and temperature. It uses the piezoresistive effect to gather the information. Since the pressure varies depending on height, the sensor can measure altitude too. Very low current consumption and voltage allow this type of sensor to be used in many modern devices.

The design is 5V ready with an onboard regulator for 3.3V. The breakout board’s standard current consumption is very low, only 5 µA. It uses an I2C interface, and the I2C address is 0x77. No soldering, nor need for distinguishing between SDA and SCL is required due to easyC. The sensor has integrated EEPROM memory with data for calibration. The pressure is measured in steps of 1hPa (=0.01hPa =0,01mbar), and 0.1°C for temperature.

• Dimensions: 22 mm x 22 mm
• Standard current consumption: 5 µA
• Standby current consumption: 0.1 µA
• Logic voltage level: 5V (on I2C header), 3V3 on easyC
• Operating voltage: 5V (onboard regulator for 3.3V)
• Pressure measurement span: 300 - 1100 hPa; ±0.02hPa deviation
• Altitude measurement span: 9000 m to -500 m above sea level
• Temperature measurement span: -40 to +85°C; ±2°C accuracy
• Communication: I2C (address: 0x77)
• Connectors: easyC x2
• Mounting holes: 2

Find Pressure & temperature sensor BMP180 breakout on Soldered website.