The system also uses an ultrasonic sensor that can detect motion. After 20 second you will hear the alarm tone. When a door opens the system will give you 20 seconds to give the correct password. You can still disarmed it by typing the correct password. When a window opens, and the system is armed, you will hear the alarm tone from buzzer. In this tutorial I will use two for windows and one for door. You can put as many windows magnetic switched you want. System will give you 10 seconds to leave from your place, after 10 seconds the system will be armed. You can arm the system by pressing the 'A' button. It also has a buzzer for making various tones during operation. If you want to change the current password, you can do it by pressing the 'B' button, and if you want to skip or abort an operation you can do it by pressing the '#' button. You can disarm it by typing the correct password and pressing the '*' button. In this guide I will help you to make it easily on breadboard by using the Arduino uno board, and I will give you some extra tips on how you can make your own Arduino-based custom circuit.īy using this system you will be able to arm and disarm the security system. I made my own circuit by using the ATmega328 micro controller but this is an optional step. In this Instructables guide I will show you how to make your own password security system by using the Arduino uno board and some magnetic door switches.

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