Whole material is made by laser cutting method, and the material i MDF board. I think is the best way for making the fast prototyping and model. The main part is the dark room with lens and LED light source. Fortunately, the lens was exactly fit to cut parts. The whole parts are assembled by super glue because the char will sustain the weight of one person.
Laser cutting
Whole parts
Lens
Dark room parts
Installed Lens
Structure for sustaining weight
Assembling
The bottom of model
Support parts for Servo
The circuit is placed on the bottom of top floor. The photoresist sensor will be on the top of the floor through small hole, and the final test is pretty successful I think.
Installing Photosensor
Circuit
Installed LED
Working parts
Idle status
Gain weight