7. Maqueen line sensors

7.1. Set up the line sensors

class MaqueenLineSensors

Set up the buggy’s line sensors for use.

Use line_sensor = maqueen.MaqueenLineSensors() to use the buggy’s line sensors.

The code below imports the maqueen module and sets up the line sensors.

from microbit import *
import maqueen


# set up line sensor
line_sensor = maqueen.MaqueenLineSensors()

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7.2. Read values from the line sensors

line_sensor_read(sensor)

Return the line sensor value.

The value over white is 1, while over black is 0, since it uses a digital read (not analog).

sensor is ‘left’ or ‘right’

from microbit import *
import maqueen


# set up line sensor
line_sensor = maqueen.MaqueenLineSensors()

left_reading = line_sensor.line_sensor_read('left')
display.scroll(left_reading)

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Tasks

1. Write code to read the right line sensor and display its value.

2. Write code to read both the left and the right line sensor and display their values with ‘L’ before the left reading and ‘R’ before the right reading.