The Adafruit MPL3115A2 I2C Barometric Pressure / Altitude / Temperature Sensors use only 2 x GPIO pins (I2C) and provide you with precision air pressure measurements. Each board contains a 3.3V regulator, an I2C level shifter and pull-up resistors on the I2C bus making it 5V ready. There's an interrupt pin which goes active when data is available plus a 32-sample FIFO which lets the sensor record samples automatically for later download. The chips perform the altitude calculation for you which is handy if you roll your own software or are tight on code space.
Adafruit supply a library and example code to get you started. Supplied with a fully assembled and tested sensor board plus a strip of 0.1in. header pins for you to solder on as required.
- Measure temperature and pressure, calculate altitude
- 3 to 5V logic compatible
- Pressure range: 500 to 1100hPa (9000m to -500m above sea level)
- Absolute pressure accuracy ±4 hPa
- Temperature range: -40 to +85°C ±1°C
- Dimensions 18 x 19 x 2mm (0.8 x 0.7 x 0.1in.)
- Adafruit part no.: 1893
*Customers looking to resell on eBay or Amazon should contact Adafruit directly.
| Type |
Pressure / temperature sensor |
