Arduino Alarm Clock Code Alarm clock built from scratch and prototyped with Arduino. Shows time of day, alarms at a set time, and has a USB port to allow for charging external devices.

Arduino PIN-Protected Alarm System with Motion Detection An Arduino project implementing a security alarm system featuring PIN code access via a 4x4 keypad, status updates on a 16x2 LCD, motion ...

All the code is available on GitHub in case you also have a DSC 1550 alarm system. It’s a pretty slick hack, so don’t forget to check out the video after the break.

This Arduino based visitor alarm alerts you to the entry of a visitor by producing a beep sound every time the door is opened & automatically switches off after a few seconds. It is built around an ...

Full instructions on how to create your very own Arduino music player and alarm clock have been kindly published by Dejan Nedelkovski with all the code you require.

Here is a simple and inexpensive Arduino based motion sensor alarm with voice alert. It can be used for security purposes.

Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. In this project, we made an Gas Leak Alert Security Alarm using Arduino and MQ5 LPG Gas ...