Timer with an alarm using Arduino.
-
A sketch to work with a 4 digits 7-segment display,8-bit shift register,active buzzer and 3 push buttons.
-
Using the 3 buttons (function,plus,minus) buttons , the user can set a time.
-
When the user stop setting the timer , the screen starts to count down until it reach zero time, at this point the buzzer starts beeping until function button is pushed.
-
If the function button is pushed in the process of counting down,the user is prompoted to set a new counter.
-
The sketch implements Dynamic scanning to led the 4 digits 7-segment display.