I was so inspired by DAVID C. ROY wooden kinetic sculptures while mainly the whole mechanism is self-initiated
that last for hours some of them last forever. Shimmer was the STAR to me the flow of both layers was exactly what I had in mind

                                                                                                          BLIND description for the project    
  There will be three layers two with inverted geometrical patterns while the middle one will tell the clock The front one will revolve in the interval of a minute         
so after 6o consecutive revolution of giving a different layout every minute it will move the layer behind it (the one that describes the clock in numbers)

Then the back one with the inverted geometry will be the one connected to the proximity sensor, it will sense when someone is looking at it and revolve
in the opposite direction of the front one giving a different effect (similar to the shimmer effect)

i started by designing the two gears for the visual effect, i used AUTOCAD 2013 for the 2D form generation 

                                                               
FABRICATION
           please not that some documentation were lost that's why I'm referring to some failed trials with diagrams instead of real pictures   
 

I started using bamboo for both the gears and the carrying arms where the two gears will revolve on. i started by testing the hole where the motor will fit in,
i used three different sizes, examined them on a small model of the gear, i used the 0.7 as the 0.6 broke while pressing it and the 0.8 was
too loose the gear didn't spin with the motor . I used the big laser cutter with speed 16 and power 80 as the thickness of the bamboo sheet was 5.2mm  

 
  amboo is a natural fiber that has a direction you cant use it with thin sections specially if it was press fit, B
 the rapid use, the fibers gets easily disconnected i tried overcoming that by changing the section of the arms, they ended up too wide for the use!
 in addition to this they both were too thin to stabilize  
watch the video

To solve the problem i had to use a thicker material, i used MDF wood with thickness 8mm, the thickness helped the model to stabilize even while
moving the motors and gears. it was better to use the milling machine with this material but it was busy and i had no time so i used the same laser cutter
I kept testing the speed and power till it cut through with speed 8 and power 60 i had to modify the bed of the motor to fit exactly the size and allow
the cables to pass behind the supporters.     

 
                                                                                                                     

ELECTRONICS

at the I didn’t want to use the ready proximity sensor I wanted to design my own one, with references I managed to make the infrared one that
worked with a transmitter and a receiver LEDs with the metal isolator between them. the sensor worked and it was reading but the results were
poor in difference, I wasted sometime trying to develop it but then i ended up using my light sensor ready board from the input devices week
  

The board was simply designed to input the values from the sensor and translate them to control the motor's speed

 Choosing the components?

please note that during the first final round i didn't have time to design the board on eagle so i used the ready ones i've already made from the past
weeks,i added jumpers and they worked fine, later on after the first submission i had time to design the board with the same components on one board

The micro controller: ATTINY44 was the choice as for the number of pins and the memory it has is suitable to store the program and run it efficiently

The light sensor: it needs a resistance along with it so I used the 49.9k. It also needs to be connected to a reading pin in the microcontroller so I used PA7

The steppers: I used unipolar steppers but by excluding two wires I was able to use them as bipolar as they proved through research that they have more torque
with high speed The idea with the motors was to turn both motors from the same board, so I arranged the coil cables identically so that when they are placed back to back they spin
 in the different direction (watch the video)

Power supply: in order to turn both motors at the same time I needed a voltage higher than 9v so that when I added the power jack. The power jack has

 direction, the one I used had a metal bar from the side that indicates the positive input

The regulator: along with the power supply came the 5v regulator to regulate the current coming from the power jack and fix it to maximum 5v

Capacitor: it's advised to use a capacitor before the regulator in the power line to keep it cool and avoid burning it with high current

 

  The program
i used Arduino to program  this microcontroller, i modified the stepper code, to read input from the light sensor added at it
at the beginning the sensor value were so wide for the motor to read, so i mapped them with a math equation then they worked fine

watch video one
watch video two

 IN THE END!

I didn't come up with an invention that changed the world but in fact i did change my life, 6 months ago I knew nothing
 about clearly EVERYTHING, so I'm grateful to every one, my gurus, my class mates, and even to Barcelona for this life time experience
FROM CAIRO