Page 87 - Ai Robogenius

SMART ECO ALARM SYSTEM

Design a Smart Eco Alarm System using the
micro:bit that senses light and temperature
to help save energy. The alarm will flash LEDs

or play a sound when the room is too hot or

CAPSTONE PROJECT too bright, encouraging eco-friendly actions
like turning off lights or fans.

Session 1: Understanding Sensors and Planning

Activities:

1. Learn about Input and Output Devices
Task: Research how the micro:bit uses light and temperature sensors as inputs and

the LED display or buzzer as outputs. Identify real-life uses such as alarms, weather
monitors or automatic lights and create a report.

Skills Practiced: Understanding sensor-based input/output and environmental
awareness.
2. Design Your Idea on Paper

Task: Draw a simple layout of the Smart Eco Alarm System showing the micro:bit,
sensor areas and outputs. Label input and output connections such as Pin 0, GND
and 3V.

Skills Practiced: Circuit representation and logical design planning.
Outcome for Session 1

A hand-drawn plan illustrating how the Smart Eco Alarm System works.

Session 2: Coding the Smart Eco Alarm in MakeCode
Activities:

1. Create the Light and Temperature Alarm Code
Task: Open Microsoft MakeCode and create a new project named Smart Eco Alarm.
Use the light and temperature sensor blocks to detect changes in brightness and heat.
When light > 150, display a sun icon; when temperature > 30 °C, display a fire icon;

when both are high, play a short melody.
Skills Practiced: Conditional programming, sensor input handling and output control
using LEDs and sound.

Capstone Project
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