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 ...

Arduino Night Security Alarm with PIR Sensor. January 31, 2014 by T.K. Hareendran ... 5mm Red LED ; 5V Piezo-Buzzer ; 9V battery; PIR/IR sensor (see text) Sensor Input. Advertisement. Partner Content.

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Programming Arduino for Burglar Alarm. The code for Dog Barking Alarm using Arduino and PIR Sensor is very simple. Complete code can be found at the end of the document. The explanation of the code is ...

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 ...

To learn more about PIR sensor, follow the link and also learn how PIR sensor can be used with with Arduino, Raspberry Pi and other microcontrollers for various applications: ... The 6 th pin (P1.4) ...

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 ...

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