Ardbot-the making of

Another link for building a simple 2 wheeler with Arduino
http://www.robotoid.com/servomag//

iRobot with arduino

Arduino to iRobot interface...cool!

sensors' definition for arduino

DIY arduino

http://www.theparsley.com/arduino/diy/
http://txapuzas.blogspot.com/2010/07/paperduino-stripboard.html

Arduino Tankshield

http://antipastohw.blogspot.com/2009/01/remote-controlled-tank.html

barometric sensor

http://interactive-matter.eu/2009/12/arduino-barometric-pressure-sensor-bmp085/

9DOF IMU

http://thesignalpath.com/blogs/2011/09/18/9-dof-ahrs-sensor-board-and-rgb-led-matrix-demo/

http://robotclub.ab.ca/articles/33/arduino-nxtmmx-lego-motors

http://sheepdogguides.com/arduino/FA1main.htm