need help with a robotics report

Our robotics this time was (adopt) as shown in some of the example in the attachment.

dificulties to connect the sensors circuits as needed in + & - signs and how parrallel they shoud and so on.

another one: how to make a program that says how to sens and tell which food coin is it ( we have 3 diffrent sizes )

if all three sensors triped means the biggest one the the arm which got a vacum and a sensor goes to pick the sample

and so on with the other sizes ( mid & small ).

and we planning to make it collect each one in a carton so the the robot seems as a machine in a production line ( so its sort of industrial robot)

all what I need to say in 5-7 pages how we got through and succeeded in building it.

want it as active report as hell says we made something!!!