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18 Jun 2009 @ 11:25 AM

How to do Timer and Save Settings?

I am thinking about building an alarm clock with Arduino. As I look Arduino a bit deeper, I am puzzled and wondering how to do the clock timer and how to allow user to save his/her setting, say, “alarm me at 8AM”?

Found a bit info on the clock timer: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1191209057/0

As far as saving configuration settings, It seems Arduino is a bit limited… It only has 512 bytes on EEPROM. It sounds like we need to add another chip to it.

http://www.arduino.cc/playground/Main/InterfacingWithHardware#Storage

As useful programming reference:

http://www.maartenlamers.com/ThisIsWiring/

How to add/retrieve data from Arduino’s flash:

http://arduiniana.org/libraries/Flash/