MPRL Pressure Sensor (Adafruit Breakout Board) - Reading sensor data via I2C

Hi @psc1988,

There is a sample code for Arduino given by Adafruit: https://github.com/adafruit/Adafruit_MPR­LS/blob/master/Adafruit_MPRLS.cpp

Basically the first byte you will receive is the status byte, then the 3 next bytes are meant to be concatenated to form a 24-bit value (see step 3 of table 17, page 16 of the corresponding datasheet). The sample code for this first step is shown here in the code

Once you get your 24-bit value, you need to convert it to a meaningful value, as shown on page 19 of the datasheet or here in the code

I don't think you need to read 5 bytes out of the sensor (var x = i2c.readFrom(0x18, 5);), IMO you can just try reading 4 bytes, and use the 3 last bytes to calculate the pressure value.