Pieces for sensor Apparatus
(4) five hole pieces, (2) three hole pieces, (2) two peg flat pieces, (4) connectors, large rod, (2) eight peg flat pieces, (3) 16 peg flat pieces, 20 peg flat piece and (3) sensors

Top view of Sensor apparatus
20 peg flat piece is on bottom, on top of this is the 2 eight peg flat pieces
The sensors come next seperated by one lego unit. These spaces between the sensors is filled with a 2 peg flat piece followed by one of the five hole pieces. The final layer is three 16 peg flat pieces.
A pole is run through as close as possible to the sensors that includes two more 5 hole pieces. These 5 hole pieces have a 3 hole piece stuck to their end that rests up against the robot, again provideing extra support.

The arms of the robot are spread and the sensor apparatus slips into appropriate holes and is snapped to the change of direction piece. A final two-piece rod is slipped into the upper portion of the robot for added support.

The sensors are then attached, the wires on the light sensors face forward and the motor connections face front as well (two per connection on top). We added a final 16 peg flat piece over the light sensors for added support.