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There is a compitible Arduino board out there called Seeeduino.  It is kinda cool.  It uses many smaller version of  components with some additional features

EAGLE Schematic file:  click to download
EAGLE PCB file:  click to download

http://seeedstudio.com/depot/datasheet/Hello_Seeeduino.pdf

http://seeedstudio.com/depot/

Interesting way to use Arduino to monitor home power usage.  This is great to use with our combo board.

• http://jarv.org/pwrmon.shtml

Perhaps there is a way to add clock feature into Arduino without additional chip.

http://www.faludi.com/code/open-source-arduino-clock/

It will be great if it can check time with NTP first.

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/

I didn’t know you can actually make Arduino shield at home.  This is cool~

HomeMade Adruino Shield

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1244690702

Someone made a cheap Arduino board with ZigBee chip on it.  Instead of paying $30 + $75, now you can get one for under $40.

This is nice.

http://www.myra-robotics.com/

It is a bit sad that I found there is a cool show called “makerfaire”.  It is just around the corner and I just missed it! I really should get out more!

http://www.makerfaire.com/
http://antipastohw.blogspot.com/2009/06/maker-faire-2009-at-san-mateo.html