Example script: test_accel_xy_angle
- Enter this script and save it as test_accel_xy_angle.
- Flash the script into the micro:bit.
# test_accel_xy_angle
from microbit import *
import math
sleep(1000)
while True:
x = accelerometer.get_x()
y = accelerometer.get_y()
angle = round( math.degrees( math.atan2(y, x) ) )
print("x =", x, ", y =", y, ", angle =", angle)
sleep(750)
- Open the terminal.
- Verify that the angles reported are correct as you hold the micro:bit vertically, and rotate it to: 0°, 30°, 45°, 60°, 90°, 135° ,180°, 225°, 270°, 315°, and 360°. Make a note of x, y, and angle for each rotation.
- Repeat the rotations, but for each vertical rotation, tilt it away from you by 45° before measuring. As before, note the x, y, and angle values.
- Divide x into y at 45° rotation.
- Divide x into y at 45° rotation plus 45° tilt-away.
Are both results close to 1?
See how the x and y values are different for rotated vs. rotated+tilted but the y/x ratios work out to the same?