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and how the micro:bit processes sound levels to make decisions. This activity
provides a clear demonstration of how sound sensors and programming can be

used to automate robotic responses to environmental sounds.

Application

Burglar Alarms: Sound sensors can detect loud
noises, such as breaking glass or a loud shout.

If they sense these sounds, they can trigger
an alarm to alert you or the security system,

helping to keep your home safe.

eXERCISE

A. Tick ( ) the correct option.

1. What is the primary function of a servo motor?

(i) Spin continuously (ii) Move to precise angles

(iii) Generate electricity (iv) Produce sound

2. Which sensor detects changes in light levels in a circuit?

(i) Temperature sensor (ii) Sound sensor

(iii) Light sensor (iv) Motion sensor

3. What type of motor is used for precise control of angles in robotics?

(i) Stepper motor (ii) Servo motor

(iii) DC motor (iv) Induction motor

4. In what type of system would a light sensor and servo motor be used together?

(i) Air conditioning

(ii) Home lighting

(iii) Automated shading system

(iv) Speaker system

5. What does the micro:bit do when the light sensor detects bright sunlight?

(i) Raises shades (ii) Lowers shades

(iii) Turns off lights (iv) Plays sound

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