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MPL3115A2 - I2C BAROMETRIC PRESSURE - ALTITUDE- TEMPERATURE SENSOR, ADAFRUIT 1893

  ID number: 828/
Brand:ADAFRUIT
Stock:   YES
Price:13,35 €
barometric pressure ADAFRUIT MPL3115A2 - I2C Barometric Pressure - Altitude- Temperature Sensor, adafruit 1893
barometric pressure ADAFRUIT MPL3115A2 - I2C Barometric Pressure - Altitude- Temperature Sensor, adafruit 1893
barometric pressure ADAFRUIT MPL3115A2 - I2C Barometric Pressure - Altitude- Temperature Sensor, adafruit 1893
 

 

DESCRIPTION

 

This pressure 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 BMP180, 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 adafruit 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.

 

This chip looks and sounds a whole lot like the MPL115A2 but this is the precision version, which can act as an altitude-sensor as well as barometer.

 

Using the sensor is easy. For example, if you're using an Arduino, simply connect the VDD pin to the 5V voltage pin, GND to ground, SCL to I2C Clock (Analog 5 on an UNO) and SDA to I2C Data (Analog 4 on an UNO). Then download our MPL3115A2 Arduino library and example code for temperature, pressure and basic altitude calculation. Install the library, and load the example sketch. Immediately you'll have the temperature, pressure and altitude data printed in the serial console.

 

 

TECHNICAL DETAILS

 

MPL3115A2 Datasheet

 

- Dimensions: 18mm x 19mm x 2mm 

- 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