Simple tests

Ensure your device works with these simple tests.

examples/lsm303_simpletest.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4"""Display accelerometer data once per second"""
 5
 6import time
 7
 8import board
 9
10import adafruit_lsm303_accel
11
12i2c = board.I2C()  # uses board.SCL and board.SDA
13# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
14sensor = adafruit_lsm303_accel.LSM303_Accel(i2c)
15
16while True:
17    acc_x, acc_y, acc_z = sensor.acceleration
18
19    print(f"Acceleration (m/s^2): ({acc_x:10.3f}, {acc_y:10.3f}, {acc_z:10.3f})")
20    print("")
21    time.sleep(1.0)

Fast Acceleration Example

Example to demonstrate fast acceleration data acquisition

examples/lsm303_fast_accel.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4"""Read data from the accelerometer and print it out, ASAP!"""
 5
 6import board
 7
 8import adafruit_lsm303_accel
 9
10i2c = board.I2C()  # uses board.SCL and board.SDA
11# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
12sensor = adafruit_lsm303_accel.LSM303_Accel(i2c)
13
14while True:
15    accel_x, accel_y, accel_z = sensor.acceleration
16    print(f"{accel_x:10.3f} {accel_y:10.3f} {accel_z:10.3f}")

Inclinometer Example

Demonstrate inclinometer example

examples/lsm303_accel_inclinometer.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4"""Display inclination data five times per second"""
 5
 6import time
 7from math import atan2, degrees
 8
 9import board
10
11import adafruit_lsm303_accel
12
13i2c = board.I2C()  # uses board.SCL and board.SDA
14# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
15sensor = adafruit_lsm303_accel.LSM303_Accel(i2c)
16
17
18def vector_2_degrees(x, y):
19    angle = degrees(atan2(y, x))
20    if angle < 0:
21        angle += 360
22    return angle
23
24
25def get_inclination(_sensor):
26    x, y, z = _sensor.acceleration
27    return vector_2_degrees(x, z), vector_2_degrees(y, z)
28
29
30while True:
31    angle_xz, angle_yz = get_inclination(sensor)
32    print(f"XZ angle = {angle_xz:6.2f}deg   YZ angle = {angle_yz:6.2f}deg")
33    time.sleep(0.2)

Tap Detection Example

Tap detection example

examples/lsm303_accel_tap_detection.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4import board
 5
 6import adafruit_lsm303_accel
 7
 8i2c = board.I2C()  # uses board.SCL and board.SDA
 9# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
10accel = adafruit_lsm303_accel.LSM303_Accel(i2c)
11accel.range = adafruit_lsm303_accel.Range.RANGE_8G
12accel.set_tap(1, 30)
13
14while True:
15    if accel.tapped:
16        print("Tapped!\n")