This project uses an Arduino board with a PIR motion sensor to detect movement. When motion is detected, an LED lights up and a buzzer sounds. It's ideal for simple security systems or motion-based ...

The block diagram of the motion sensor alarm is shown in Fig. 2. Fig. 1: Author’s prototype Fig. 2: Block diagram of motion sensor alarm Circuit and working. The circuit diagram of the motion sensor ...

At first, the state of the PIR sensor is set to LOW. it means that no motion is detected. When a motion will be detected by the PIR sensor, it will send a signal to the microcontroller. The ...

This project involves using an Arduino to measure distances using an ultrasonic sensor and controlling a buzzer and LED based on the measured distance. The provided Arduino code performs the following ...

1. AT the start, Pins of Arduino are initialized that will be connected to the buzzer, led and the PIR motion sensor. LED will be connected to pin12 of Arduino, Buzzer will be connected to pin8 of the ...

Dog Barking Security Alarm Circuit Diagram. The schematic for the Dog Barking Alarm using Arduino is given below. The Amplifier IC is used to amplify the Output from Dog Barking Sound Module. The ...

Arduino Code for Interfacing MQ-5 Gas Sensor Module. The Arduino MQ-5 gas sensor module's coding is straightforward. We're simply reading the Sensor's analog data and turning the LED and Buzzer ON or ...

The circuit of Arduino-based shadow alarm is shown in Fig. 1. It consists of an Arduino board, power supply, light-dependent resistor (LDR) sensor, buzzer, relay driver and a few other components.