To highlight and further explain the challenges 8and accomplishments) for this project, I am posting some details on 2 of the key features we've developed: adapting a 3D Scan of Jason Bradburry's head and Build the Light box where the Robot dances.
, on Flickr
3D printed head of one of the presenters. The model was trimmed down from 1m polygons to 100k using Meshlab. then it was cut in half for ease fo 3D printing and the shape of the servo removed from within.
We got the 3D Scan from NorthOne TV and ran the simplification algorithm on Meshlab.
Once that was done, we moved to Sketchup:
We subtracted the 3D Shape of an AX12 Servo (to make room inside the had).
Finally we used a plane to divide the head in 2 halfs.
The head doesn't necessary need to be divide din half (if you join the 2 halfs it will still go in) but having it divided makes it a lot easier print (and you can print with much better quality).
The other key feature is the light box:
, on Flickr
This is the inner structure which is covered by Acrylic (as you can see in the video).
Each cube is individually light by RGB LEDs and is controlled by 2 arduino boards.
Because the LEDs run from 12V we had to design special circuitry using transistors in order to convert the Arduino 5V PWM into 12V from a 3 cell LiPo.
The amount of work with the Transistors was tremendous as every cube required 3 channels (R, G, and B).
We don't have a picture of the circuitry but if the cube makes it back (fairly) intact we'll post some more pictures.