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Erste Schritte mit LEGO
#!/usr/bin/env pybricks-micropython
from
pybricks
import
from
pybricks.ev3devices
from
pybricks.parameters
from
pybricks.tools
from
pybricks.robotics
# Play a sound.
brick.sound.beep()
# Initialize the Ultrasonic Sensor. It is used to detect
# obstacles as the robot drives around.
obstacle_sensor = UltrasonicSensor(Port.S4)
# Initialize two motors with default settings on Port B and Port C.
# These will be the left and right motors of the drive base.
left_motor = Motor(Port.B)
right_motor = Motor(Port.C)
# The wheel diameter of the Robot Educator is 56 millimeters.
wheel_diameter =
56
# The axle track is the distance between the centers of each of the wheels.
# For the Robot Educator this is 114 millimeters.
axle_track =
114
# The DriveBase is composed of two motors, with a wheel on each motor.
# The wheel_diameter and axle_track values are used to make the motors
# move at the correct speed when you give a motor command.
robot = DriveBase(left_motor, right_motor, wheel_diameter, axle_track)
# The following loop makes the robot drive forward until it detects an
# obstacle. Then it backs up and turns around. It keeps on doing this
# until you stop the program.
while True:
# Begin driving forward at 200 millimeters per second.
robot.drive(200, 0)
# Wait until an obstacle is detected. This is done by repeatedly
# doing nothing(waiting for 10 milliseconds) while the measured
# distance is still greater than 300 mm.
while
obstacle_sensor.distance() > 300:
wait(10)
# Drive backward at 100 millimeters per second. Keep going for 2 seconds.
robot.drive_time(-100, 0, 2000)
# Turn around at 60 degrees per second, around the midpoint between
# the wheels. Keep going for 2 seconds.
robot.drive_time(0, 60, 2000)
MINDSTORMS
®
®
as
ev3brick
brick
import
Motor, TouchSensor, ColorSensor
import
Port, Button, Color, ImageFile, SoundFile
import
wait
import
DriveBase
LEGO, the LEGO logo and MINDSTORMS are trademarks of the LEGO Group.
©2019 The LEGO Group.
Education EV3 MicroPython
Version 1.0.0
44
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