Circuit Diagram and Explanation: Circuit connections for this Ultrasonic Alarm are very simple. Trigger pin of ultrasonic sensor is connected to pin no. 12 of Arduino and Echo pin of sensor is ...

Arduino based Fire Alarm – Circuit and Working Fig. 2 presents the circuit diagram for the fire alarm using a flame sensor and Arduino Nano. The system is powered by a step-down transformer (X1), a ...

Working of Dog Barking Security using Arduino. Make the connections as per the circuit diagram and upload the code to Arduino Nano. When powered, the PIR sensor detects the IR rays emitted from the ...

LCD displays "FIRE HIGH" or "SMOKE HIGH". GSM module sends an SMS alert to emergency contacts. System resets when no fire/smoke is detected. Code File 📂 Filename: fire_alarm_system.ino 📌 Language: ...

This article is about making an intruder alarm using Arduino and PIR sensor. ... Circuit Diagram. Step 5: Getting Started With Arduino. If you are not already familiar with the Arduino IDE, don’t ...