Mpl3115A2 Altitude Pressure Sensor Breakout

SPECIFICATION:

-Calibrated range:50 kPa to 110 kPa absolute pressure

-Operating range: 20 kPa to 110 kPa absolute pressure

-I2C digital output interface (up to 400 kHz)

-Fully compensated internally

Direct reading:

-Pressure: 20-bit measurement [Pascals]

-Altitude: 20-bit measurement [meters]

-Temperature: 12-bit measurement [degrees Celsius]

-Programmable Interrupts

Autonomous Data Acquisition:

-Embedded 32-Sample FIFO

-Data logging up to 12 days using the FIFO

-1 second to 9 hour data acquisition rate

-1.95 V to 3.6 V Supply Voltage, internally regulated

-1.6 V to 3.6 V Digital Interface Supply Voltage

-Operating temperature from -40 °C to +85 °C.

-5 mm x 3 mm x 1.1 mm LGA package (1.25 mm lead pitch)

-MSL 1 compliant

OVERVIEW:

-The MPL3115A2 is a compact piezoresistive absolute pressure sensor with an I2C interface.

-MPL3115 has a wide operating range of 20 kPa to 110 kPa, a range that covers all surface elevations on Earth.

-The fully internally compensated MEMS in conjunction with an embedded high resolution 24-bit equivalent ADC provide accurate pressure [Pascals] /altitude [meters] and temperature [degrees Celsius] data. The internal processing in MPL3115A2 removes compensation and unit conversion load from the system MCU, simplifying system design.

-MPL3115A2’s advanced ASIC has multiple user programmable modes such as power saving, interrupt and autonomous data acquisition modes, including programmed acquisition cycle timing, and poll-only modes. Typical active supply current is 40 uA per measurement-second for a stable 10 cm output resolution.

PACKAGE INCLUDES:

1 PCS x Mpl3115A2 Altitude Pressure Sensor Breakout

https://www.nxp.com/products/sensors/pressure-sensors/barometric-pressure-15-to-115-kpa/20-to-110-kpa-absolute-digital-pressure-sensor:MPL3115A2

//SOURCE CODE TAKEN FROM BELOW LINK

//https://github.com/adafruit/Adafruit_MPL3115A2_Library/blob/master/examples/testmpl3115a2/testmpl3115a2.ino

/**************************************************************************/

/*!

    @file     Adafruit_MPL3115A2.cpp

    @author   K.Townsend (Adafruit Industries)

    @license  BSD (see license.txt)

    Example for the MPL3115A2 barometric pressure sensor

    This is a library for the Adafruit MPL3115A2 breakout

    ----> https://www.adafruit.com/products/1893

    Adafruit invests time and resources providing this open source code,

    please support Adafruit and open-source hardware by purchasing

    products from Adafruit!

    @section  HISTORY

    v1.0 - First release

*/

/**************************************************************************/

#include <Wire.h>

#include <Adafruit_MPL3115A2.h>

// Power by connecting Vin to 3-5V, GND to GND

// Uses I2C - connect SCL to the SCL pin, SDA to SDA pin

// See the Wire tutorial for pinouts for each Arduino

// http://arduino.cc/en/reference/wire

Adafruit_MPL3115A2 baro = Adafruit_MPL3115A2();

void setup() {

  Serial.begin(9600);

  Serial.println("Adafruit_MPL3115A2 test!");

}

void loop() {

  if (! baro.begin()) {

    Serial.println("Couldnt find sensor");

    return;

  }

  float pascals = baro.getPressure();

  // Our weather page presents pressure in Inches (Hg)

  // Use http://www.onlineconversion.com/pressure.htm for other units

  Serial.print(pascals/3377); Serial.println(" Inches (Hg)");

  float altm = baro.getAltitude();

  Serial.print(altm); Serial.println(" meters");

  float tempC = baro.getTemperature();

  Serial.print(tempC); Serial.println("*C");

  delay(250);

}

15 days