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 ...

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.

This code simulates the operation of an alarm. To disable it you must press the correct sequence of buttons. 3 failures connect the alarm.

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.

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

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 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 ...

[IngGaro]’s latest project uses the full range of features available in this versatile microcontroller and has turned an Arduino Mega into a fully-functional home alarm system.