Main Content

ADXL34x Accelerometer

Measure linear acceleration along axes of ADXL34x family of accelerometers

Since R2022b

Add-On Required: This feature requires the Simulink Support Package for Raspberry Pi Hardware add-on.

  • ADXL34x Accelerometer

Simulink Support Package for Raspberry Pi Hardware / Sensors / IMU Sensors


The ADXL34x Accelerometer block reads data from the ADXL34x family of accelerometers (ADXL343, ADXL344, ADXL345, and ADXL346) with Raspberry Pi® board.

You can use this block to measure linear acceleration along the X, Y and Z-axes. The block also provides the option to enable the data ready interrupt.

The block outputs acceleration as a 1-by-3 array.



expand all

This port outputs the linear acceleration (in m/s2) along the x-, y- and z-axes as a 1-by-3 array.

Data Types: double


It is observed that there are many faulty cloned ADXL345 sensors available in the market, with Z axis raw output becoming unresponsive. Buy the sensor from a genuine distributor to avoid this issue.


expand all

Specify the module on the board that you are using for I2C communication.

The I2C address of the ADXL34x sensor from which the block reads the values.

The ADXL34x sensor can have two I2C addresses depending on the logic level on pin ALT of the sensor.

Pin NamePin StateI2C Address

Select the data type of the sensor from which the block reads the values.

Specify the output data type for the values read from ADXL34x sensor. The default data type for Raspberry Pi board is single. Use this parameter to change the values to double, if required.

Specify how often this block reads the data from the ADXL34x sensor. When you set this parameter to -1, Simulink determines the best sample time for the block based on the block context within the model.

Advanced settings

Select the range of acceleration that the accelerometer can measure.

Select the output data rate at which accelerometer data is sampled.

If this option is selected, an interrupt is generated on pin INT1 or INT2 of the sensor when data is ready, allowing you to trigger other subsystems to perform any action.

Select the interrupt generate pin to read accelerometer data.


To enable this parameter, select the Enable data ready interrupt parameter.

Version History

Introduced in R2022b