Measure linear acceleration along axes of ADXL34x family of accelerometers
Simulink Support Package for Arduino Hardware / Sensors
Simulink Coder Support Package for STMicroelectronics Nucleo Boards / Sensors
Embedded Coder Support Package for Texas Instruments C2000 Processors / Sensors
The ADXL34x Accelerometer block reads data from the ADXL34x family of accelerometers (ADXL343, ADXL344, ADXL345, and ADXL346) with Arduino hardware.
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.
Acceleration — Linear acceleration measured by ADXL34x sensor
This port outputs the linear acceleration (in
m/s2) along the
x-, y- and
z-axes, as a
n is the value specified as
Samples per frame.
Timestamp — Timestamp at which data is read
matrix | (
Timestamp (in seconds) at which data is read from the sensor, returned
n-by-3 matrix, where
n is the value specified as Samples per frame.
This output port appears only if you select the Enable timestamp output parameter.
The data type of Timestamp output depends on the value that you selected for the Data type parameter.
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.
I2C address — I2C address of ADXL34x sensor
0x53 (default) |
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 Name||Pin State||I2C Address|
Enable timestamp output — Set output port for obtaining timestamp
off (default) |
Select this parameter to set Timestamp as one of the output ports.
Data type — Output data type for values from ADXL34x sensor
single (default) |
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 Arduino® hardware is
single. Use this parameter to
change the values to
double, if required.
Samples per frame — Number of samples that the block outputs
1 (default) | positive integer
Specify the number of samples that the block outputs. The value that you specify here is also used to compute the output sample time:
Output sample time =
Samples per frame *
Sample time — Time interval to read data
-1 (default) | positive integer
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. The output sample
time is the product of
Samples per frame and
Sample time that you specify.
Accelerometer range — Full scale for measuring linear acceleration
±4g (default) |
Select the range of acceleration that the accelerometer can measure.
Accelerometer output data rate — Rate at which accelerometer data is sampled
12.5 Hz (default) |
0.1 Hz |
0.2 Hz |
0.39 Hz |
0.78 Hz |
1.56 Hz |
3.13 Hz |
6.25 Hz |
25 Hz |
50 Hz |
100 Hz |
200 Hz |
400 Hz |
800 Hz |
Select the output data rate at which accelerometer data is sampled.
Enable data ready interrupt — Enable interrupt when data is ready
off (default) |
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.
Interrupt generate pin — Pin to generate data ready interrupt
INT1 (default) |
Select the interrupt generate pin to read accelerometer data.
To enable this parameter, select the Enable data ready interrupt parameter.
Introduced in R2022a