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 ...

Circuit Diagram and Explanation. This burglar alarm circuit is very simple, whenever PIR sensor detects any human body movement, its OUTPUT pin becomes HIGH, which is connected to UM3561’s Power ...

This circuit is designed to alert the user when an intruder enters into the home. In this project, if there is any obstacle in front of IR sensor, it generates an interrupt signal. This interrupt ...

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 ...

Fig. 1: Author’s prototype Fig. 2: Block diagram of motion sensor alarm Circuit and working. The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1) ...

A burglar alarm or an intruder alarm is basically an electronic device that sounds an alarm when it detects an intruder in the home. ... Security Alarm. This article is about making an intruder alarm ...

To use the fire alarm system, follow these steps: Assemble the hardware components according to the circuit diagram provided. Upload the code to the Arduino board. Adjust the sensitivity of the alarm ...

By observing the graph, users can visualize the intensity and direction of the detected vibrations. Steps to Use Setup Arduino Code. Connect the Arduino Uno board to the ADXL335 accelerometer, LCD ...

Power up the sensor through Arduino and connect the A0 pin of the sensor to A5 of Arduino. Connect a buzzer and an LED in a parallel configuration. Connect their one end to the ground of Arduino and ...

This circuit diagram illustrates a fire and smoke detection system using an Arduino UNO R4 WiFi, MQ2 smoke sensor, and a flame sensor (fire sensor). The Arduino is the central controller that receives ...