MPL3115A2 Pressure Sensor Hookup Guide
Hooking It Up
Wiring up the MPL3115A2 pressure sensor is very easy! After soldering the headers of your choice on the board, you'll need to convert the logic between the 5V and the sensor using a logic level converter.
You'll need 5v and 3.3V for VCC, one for GND, and two data lines for I2C communication from your Arduino. You may also use the A4 and A5 pins on older Arduino Boards that do not have SDA and SCL broken out.
With respect to the logic level converter, the pin connections starting from LV1 are listed in the table below.
|MPL3115A2||Logic Level Converter (Low Side)||Logic Level Converter (High Side)||5V Arduino w/ Atmega328P|
|SCL||LV1||HV1||SCL (or A5)|