logologo
Contact

HOMEABOUTSERVICESBLOGSBOOKSSHOPCONTACT

+977 9803661701support@nepatronix.orgLokanthali, Bhaktapur

© 2025 NepaTronix all rigths reserved

Fire Alarm(STEAM Education)

  Back To Blogs

To understand the basic principles of fire detection and alarm systems by building a simple fire alarm circuit.

Project : 38


Fire Alarm

 

If you want to post your project ,research or any document related to Ai,Ml,IoT,Robotics then please email us with your image ,details and your project at blog@nepatronix.org

Project Aim:

To understand the basic principles of fire detection and alarm systems by building a simple fire alarm circuit.


Components Used:

1.     Power Supply

2.     Thermistor

3.     Transistor NPN

4.     Buzzer

5.     Resistor 100Ω, 220Ω & 1K

6.     Connecting Wires

 

Circuit Diagram:


Connection Procedure:

Thermistor Sensor part:

Step 1: Connect the positive terminal of the Power Supply (Pin 62) to one end of the Thermistor (Pin 49).

Step 2: Connect the other end of the Thermistor (Pin 50) to one end of the 220Ω Resistor (Pin 4).

Step 3: Connect the other end of the 220Ω Resistor (Pin 3) to the negative terminal of the Power Supply (Pin 59).

 

Buzzer Alert part:

Step 4: Connect the positive terminal of the Power Supply (Pin 63) to one end of the 2.2K Resistor (Pin 7).

Step 5: Connect the other end of the 2.2K Resistor (Pin 8) to the positive terminal of the Buzzer (Pin 54).

Step 6: Connect the negative terminal of the Buzzer (Pin 53) to the Collector of the NPN Transistor (Pin 31).

Step 7: Connect the Base of the NPN Transistor (Pin 30) to one end of the 1K Resistor (Pin 6).

Step 8: Connect the other end of the 1K Resistor (Pin 5) to the other end of the Thermistor (Pin 50).

Ensure each connection is secure and follows the specified pin numbers for proper functionality.

 

Explanation:

In this project, we're constructing a fire alarm circuit using common components like a thermistor, transistor, and buzzer. The thermistor serves as the fire sensor, detecting heat. When it senses a rise in temperature, its resistance changes, triggering a voltage that activates the transistor. The transistor acts as a switch, allowing current to flow to the buzzer, which then emits an alarming sound, warning people of the potential fire hazard.


If you want to post your project ,research or any document related to Ai,Ml,IoT,Robotics then please email us with your image ,details and your project at blog@nepatronix.org




Total likes : 3

Comments






Read More Blogs!

Research on Web-Based Smoke and Gas Detection System

This project presents a Smoke and Gas Detection System designed primarily for household applications but also suitable for industrial use. Utilizing an ESP32 microcontroller along with MQ-135 and MQ-3 sensors, the system effectively detects harmful gases and Smokes. Data from the sensors is transmitted to a web-based interface via the ThingSpeak platform, enabling real-time monitoring and alerts. The integration of a buzzer provides immediate audio notifications in the event of a detected hazard. This project aims to enhance safety by providing an efficient, reliable solution for early detection of Smoke and gas leaks, ultimately minimizing risks to life and property. By exploring various applications of the components used, this report further emphasizes the versatility and potential of IoT technology in safety systems.


1.7k00

Soil Moisture Tester(STEAM Education)

To learn how to build a soil moisture tester that alerts when soil moisture levels are low.


1.6k04

Development of a Library Noise Alert System Using Arduino(Automation Project)

This proposal outlines the development of a library noise alert system using an Arduino microcontroller. This system will monitor noise levels and alert users when the noise exceeds a predefined threshold, promoting a quiet and conducive environment for study and research.


1.5k08

Research on IoT based Attendace System

This IoT based research project is designed to create an RFID-based attendance system using an ESP32 microcontroller and an MFRC522 RFID reader. The system reads RFID card UIDs, compares them with predefined UIDs to identify users, and displays the results on a LiquidCrystal_I2C LCD screen. If the scanned card UID matches the predefined UID, a "Welcome" message is shown; IoT Projects Arduino otherwise, an "Access Denied" message is displayed. This project demonstrates the use of RFID technology for access control and attendance management.IoT Projects .


3.1k011