Adafruit MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor

Adafruit MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor

This MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor from Freescale is a great low-cost sensing solution for precision measurement of barometric pressure and altitude. The MPL3115A2 has a typical 1.5 Pascal resolution, which can resolve altitude at 0.3 meters (compare to the BMP180 which can do 0.17m). It has some upsides compared to the BMP280 , such as interrupt outputs for ultra-low power usage, and its also a heck of a lot easier to read altitude with a built in altimeter calculation - no calibration reading and calculating required. As a bonus, there's even a fairly good temperature sensor with ±1°C typical accuracy (±3°C max).

This chip likes to be used with 2-3.6V power and logic voltages, so we placed it on a breakout with a 3V regulator and logic level shifting. Its easy to use with any Arduino or microcontroller that has i2c capability.

Technical Details:

• Dimensions: 18mm x 19mm x 2mm / .7" x .8" x .1"

• Weight: 1.2g

• Vin: 3 to 5.5 VDC

• Logic: 3 to 5V compliant

• Pressure sensing range: 50-110 kPa (up to 10Km altitude)

• 1.5 Pa / 0.3 m altitude resolution

• This board/chip uses I2C 7-bit address 0x60

• MPL3115A2 Datasheet