Alarm System Powered By Arduino

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https://www.electronics-lab.com/alarm-system-powered-arduino/

Dejan Nedelkovski had built an Arduino security and alarm system project that uses an ultrasonic sensor for detecting objects and a buzzer for notification. Components needed to build this simple system are: Arduino board, LCD display, 4×4 keypad, ultrasonic sensor and buzzer. The circuit can be connected as shown in the schematics below. In order […]

How to interface Keypad 4×4 with Arduino

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https://www.electronics-lab.com/interface-keypad-4x4-arduino/

In this tutorial we are going to learn some basics on using Keypad 4×4 on Arduino. by mybotic @ instructables.com This keypad consists of 4 rows x 4 columns of buttons. It is ultra-thin that it provides an useful human interface component for microcontroller projects. Convenient adhesive backing provides a simple way to mount the […]

ArdLock – Arduino Door Lock

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https://www.electronics-lab.com/ardlock-arduino-door-lock/

EswarD2 @ instructables.com has build an Arduino based door lock using Arduino UNO, a keypad and a servo motor. This a door lock built as fun project.It is quite easy to build and a fun way to learn and improve your knowledge of arduino.I tried to add a 16*2 display but there werent enough GPIO pins […]