arduino clock with Alarm
we can easily design alarm clock by using arduino UNO.The circuit is same as Arduino nano clock .we have to add alarm to this code. we have to set alarm time and store this alarm data to eeprom.Here i want to inform that arduino nano has internal eeprom of 512 Bytes.here we can store that alarm data.first we have to install eeprom liabrary which is #include <EEPROM.h> in arduino ide and then write code to write and read alarm data to & from eeprom. alarm code: Download this code is used to set two alarms and buzzer is used to beep alarm.