Welcome to our new blog. Here we want to give back some of our ideas, in exchange for all great ideas other people share.
A couple of weeks ago I saw the delta robot for the first time (by mjcbruin at http://letsmakerobots.com/node/10577) , and it seemed like a nice project to learn coding Arduino, play with servos and make something which is also appealing to non techies. See the video below for the result:
This delta robot is different from the one from let’s make robots because it uses a proper XYZ spacing. In the movie you can see the platform moves in a flat plane. All calculations are done inside the Arduino, based on the code mzavatzky at http://forums.trossenrobotics.com/tutorials/introduction-129/delta-robot-kinematics-3276/.
Also the robot is controlled by a Wii Nunchuck. Pitch controls movement on the Z axis, the joystick controls X and Y. See http://www.arduino.cc/playground/Main/WiiChuckClass for the code used to read out the Wii Nunchuck.
All code is available on pastebin: http://pastebin.com/Kfq2WR5U