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Personal Security System Using Arduino:
This is just a fun project, please don’t actually rely on this device to keep your house secure! This design uses an Arduino, an HC-SRO4 Ultrasonic Sensor, a Buzzer, and some LED’s. Ultimately from this tutorial, I hope you learn how to use a buzzer and LED’s to display how far away an object is from the ultrasonic sensor. The project involves the use of Arduino, motion sensor, buzzer, LCD display, SIM800 GSM module and a simple program. The sensor detect any motion in its permissible range and triggers the alarm.
This system is a basic motion activated the alarm. It is built around an Arduino Microcontroller. It is connected to a GSM Module, a PIR motion sensor, a buzzer, a resistor, and a pair of external terminals. The whole system is battery powered so that it is easily portable. Once you have the code, you can connect all the external parts. The easiest way to do this is with a breadboard. This will let you make temporary connections to test everything out.