The program rings for 5 minutes (the time is configurable) to make sure you wake up. Keep ringing for 5 minutes until you get out of bed to cancel it. Once the alarm is cancelled by pressing the cancel button it re-arms itself an hour later, ready for tomorrow. The program is written to ring the alarm each day at 5.00 am (this can easily be changed in the code). ![]() Sound an alarm at a predetermined time, without having to be 'armed' each day. Remember the time after a power failure. Here a Alarm clock is presented which is built using simple Atmega-328 microcontroller and DS-1307 RTC which is a time keeper which keeps the time even when there is a power failure. There are various types of clocks like good old Pendulum clocks, Analog clocks and the now trending modern Digital clocks.ĭigital clocks has many advantages over the analog clocks like the Accuracy in time, easy reading of time when compared to analog, visibility even in darkness and so on. ![]() ![]() Hi everyone! This is my first instructable! After reading hundreds of instructables, I decided to make one myself.Ĭlock is one of the most essential house hold things.
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