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receives from the micro:bit. This hands-on activity provides them with a real-
world example of how motors are controlled in everyday applications, such as

in household appliances, electric cars, or robots.

Application

In a remote-controlled car, the servo motor helps steer
the wheels. When you turn the controller, it sends a

signal to the servo motor, which adjusts the angle of
the wheels, allowing the car to turn smoothly.

Combining Sensors and Motors

Let's learn how to combine sensors and motors to build a simple robot that
reacts to light, using a light sensor.

Light Sensor

Light sensor is an input device. It is used to detect changes in light levels and
can be programmed to use this environmental information as an input to carry-
out further instructions in computer systems. For example, you can code the

micro:bit to make a sun light that shines
brightly when the light sensor senses it is
bright; when the light levels are very low.

The micro:bit uses the LED display as the
light sensor. The LED display performs two
functions on the micro:bit, to light up and

glow brightly and to also detect, measure
and respond to the level of light wherever it
is placed.

Servo Motor

A servo motor is a type of motor that can move to a specific angle when given a
signal. Unlike regular motors, which spin continuously, a servo motor is precise,
allowing for controlled movements.

When you combine the light sensor and the servo motor using the micro:bit,
you can create automated systems that react to changes in light. For example,

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