ELECTRONICS & EMBEDDED
Smoke & Heat Alarm Model
Create a low-voltage demonstration alarm using a smoke/gas sensor and buzzer.
LevelSchool / Intermediate
Duration2 Weeks
Components₹900–₹1,800 CodingLow
Project overview
Create a low-voltage demonstration alarm using a smoke/gas sensor and buzzer.
Create a low-voltage demonstration alarm using a smoke/gas sensor and buzzer.
Components / materials required
✓MQ-series sensor
✓Arduino
✓Buzzer
✓LED
✓Temperature sensor optional
✓Breadboard
What the project demonstrates
✓Smoke/gas threshold alert
✓Buzzer and LED
✓Optional temperature warning
Suggested build plan
01
Sensor reading
Read and calibrate sensor.
02
Alarm logic
Set demo threshold.
03
Indicators
Drive buzzer/LED.
04
Presentation
Explain limitations and safety use.
Learning outcomes
✓Read analog sensors
✓Create threshold alarms
✓Discuss fire-safety system concepts
Safety / important note
Educational demonstration only; not a certified life-safety device.