MPL3115A2 I2C Barometric Pressure / Altitude / Temperature Sensor

MPL3115A2 Adafruit Sensor: a multiple-measurement tool!

Offering a precision of 30 cm, the MPL3115A2 Adafruit Sensor is a versatile and more accurate version of the MPL115A2, which can be used only as a pressure sensor. With this model, you don’t need to spend all your time converting data to deduce the altitude for the barometric pressure level: everything is given to you on a plate!

The MPL3115A2 communicates information on pressure, altitude and temperature (the latter with an accuracy of 1 °C).

Compatible with Arduino and Raspberry Pi, the MPL3115A2 Barometric Sensor can be programmed using an extensive library of open-source codes, so you’ll find it very easy to program your module in order to receive all the information you need, and at a more than reasonable price!

Presentation video of the MPL3115A2 I2C Barometric Pressure / Altitude / Temperature Sensor (15:07)

Uses of the Barometric Pressure Sensor

Having a barometric pressure sensor that also provides information on altitude and temperature can be extremely useful for all your UAV navigation systems. The barometric sensor will also have its place in your weather station projects, and in your GPS and navigation assistance systems.

To use your MPL3115A2 Barometric Sensor with your Arduino, simply connect:

• the VDD pin to the 5 V pin
• the GND pin to ground
• the SCL pin to the I2C Clock pin (Analogue 5 on an Arduino Uno board)
• The SDA pin to the I2C Data pin (Analogue 4 on an Arduino Uno board)

Technical specifications of the Pressure / Altitude / Temperature Sensor

• Dimensions: 18 x 19 x 2 mm
• Weight: 1.2 g
• Input voltage: 3.3–5.5 Vdc
• Logic voltage: 3–5 V compliant
• Pressure sensing range: 50–110 kPa (up to 10 km in altitude)
• Resolution (altitude): 1.5 Pa / 0.3 m
• This board uses a 0x60 7-bit I2C address