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-Alarm-Clock-Code/README.md at ...

This Arduino based visitor alarm is useful for offices, clinics and shops. It alerts you to the entry of a visitor by producing a beep sound every time the door is opened. The alarm automatically ...

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 ...

This is an LCD clock made with DS3231 real time clock module, which unlike DS1307 has the possibility of Alarm and temperature monitor. In this case, the LCD screen displays the date, time, two alarms ...

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 Real time clock is a digital clock to display real time using a RTC IC DS1307 which works on I2C protocol. Real time clock means it runs even after power failure. When power is ...

Now it is very easy to build your own siren sound alarm, small enough to be carried in a garment pocket. This powerful audio-visual alert device is realized using the renowned Arduino platform. The 9V ...