Simple test

Ensure your device works with this simple test.

examples/adxl34x_simpletest.py
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import time
import board
import busio
import adafruit_adxl34x

i2c = busio.I2C(board.SCL, board.SDA)

# For ADXL343
accelerometer = adafruit_adxl34x.ADXL343(i2c)
# For ADXL345
# accelerometer = adafruit_adxl34x.ADXL345(i2c)

while True:
    print("%f %f %f" % accelerometer.acceleration)
    time.sleep(0.2)

Motion detection

Use the accelerometer to detect motion.

examples/adxl34x_motion_detection_test.py
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import time
import board
import busio
import adafruit_adxl34x

i2c = busio.I2C(board.SCL, board.SDA)

# For ADXL343
accelerometer = adafruit_adxl34x.ADXL343(i2c)
# For ADXL345
# accelerometer = adafruit_adxl34x.ADXL345(i2c)

accelerometer.enable_motion_detection()
# alternatively you can specify the threshold when you enable motion detection for more control:
# accelerometer.enable_motion_detection(threshold=10)

while True:
    print("%f %f %f" % accelerometer.acceleration)

    print("Motion detected: %s" % accelerometer.events["motion"])
    time.sleep(0.5)

Freefall detection

Use the accelerometer to detect when something is dropped.

examples/adxl34x_freefall_detection_test.py
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import time
import board
import busio
import adafruit_adxl34x

i2c = busio.I2C(board.SCL, board.SDA)

# For ADXL343
accelerometer = adafruit_adxl34x.ADXL343(i2c)
# For ADXL345
# accelerometer = adafruit_adxl34x.ADXL345(i2c)

accelerometer.enable_freefall_detection()
# alternatively you can specify attributes when you enable freefall detection for more control:
# accelerometer.enable_freefall_detection(threshold=10,time=25)

while True:
    print("%f %f %f" % accelerometer.acceleration)

    print("Dropped: %s" % accelerometer.events["freefall"])
    time.sleep(0.5)

Tap detection

The accelerometer can also be configured to detect taps.

examples/adxl34x_tap_detection_test.py
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import time
import board
import busio
import adafruit_adxl34x

i2c = busio.I2C(board.SCL, board.SDA)

# For ADXL343
accelerometer = adafruit_adxl34x.ADXL343(i2c)
# For ADXL345
# accelerometer = adafruit_adxl34x.ADXL345(i2c)

accelerometer.enable_tap_detection()
# you can also configure the tap detection parameters when you enable tap detection:
# accelerometer.enable_tap_detection(tap_count=2,threshold=20, duration=50)

while True:
    print("%f %f %f" % accelerometer.acceleration)

    print("Tapped: %s" % accelerometer.events["tap"])
    time.sleep(0.5)