BMP180 module - pressure and temperature sensor

Small (only 10.5 x 13 mm) board with the BMP180 sensor. This is I2C (TWI) sensor for measuring atmospheric pressure and temperature. It is used in weather stations and in all flying devices (drones) to read altitude.

Warning - I2C lines are not protected by any converter, so You will need some bidirectional logic level converter (like this or this) to get the board working with Arduino. You can connect module directly to microcontrollers running on 3.3V like Raspberry Pi or Teensy 3.2.

You can power module with 5V, there is 3.3V regulator on board. In this design Vdd = Vddio, and according to BMP180 datasheet maximum voltage on SDA/SCL pins is equal Vddio. Since it is only 3.3V connecting module to Arduino running on 5V TTL means You are working outside voltage specified in BMP180 datasheet. It may work or it may get damaged, YMMV. We recommend using logic level converter with an Arduino.

Technical details

• Pressure range: 300 ~ 1100 hPa (altitude 9000 m ~ -500 m)
• Power supply voltage: 1.8 V ~ 5 V
• Size: 10.5 x 13 x 2.8 mm
• Low power consumption: 5 μA, in standard mode, standby current: 0.1 μA
• High precision: the low-power mode, the resolution of 0.06hPa (0.5 meters)
• High linearity mode, the resolution of 0.03 hPa (0.25 meters)
• Including temperature output
• I2C Interface
• Temperature compensation
• MSL 1 Reaction Time: 7.5ms