I. OBJECTIVE:

We built a robot called Line Tracker. It's purpose is to follow a thick, black line on white paper. Infared sensors make this possible.

II. EQUIPMENT:

Necessary Tools:

Long Nose Pliers

Screwdriver (+) (M2-3 size), Screwdriver (-) 2-3 mm width)

Small Hammer

Two "AA" Batteries, One 9V Battery

Electronic Parts:

Slide Switch

Connector Wires (1 Orange, 1 Green, 1 Yellow and 1 Blue)

9V Battery Snap

"AA" Battery Holder (2 sided)

PC Board (Assembled), Sensor PCB (Printed Circuit Board) (Assembled)

Mechanical Parts:

Body Set (A), Dome Set (B), Wheel Set (C), Tire Set (D)

6 Flat Spur Gears (40 ) teeth with Boss, 2 Flat Spur Gears (24 teeth) with Pinion (Small), 2 Flat Spur Gears (40 teeth) with Pinions (Large), 4 Flat Spur Gears (36) with Pinion Gears (8 teeth) (Small), 2 Pinion Gears (12 teeth) (Large)

6 M3 x 10 Screws, 4 M3 x35 Screws, 2 M2.6 x4 Screws (Black), 3 M2.6 x 8 Tap Screws, 8 M3 Nuts, 8 M3 Nylon Nuts

43 x 15 Spacers

10 3.2 Flat Washers

2 Metal Shafts, 2 Screw Shafts

2 Motors

1 Small Wrench

1 Small Tube of Grease

III. PROCEDURE:

1.WIRING:

Insert the wires through the pipes.

Insert the pipes with the wires into the pipe holder, and then put the wires through the dome.

Connect each wire to the PC board. They have a special order to be in so be careful.

When attaching the switch be sure that it is aligned with the on mark on the rear dome use terminal posts this is we what had to do. (Pull it up gently, insert the wire and gently push it back down.)

2. MECHANICAL ASSEMBLY:

Attach both pinion gears to both motors.

Install both of the motors into their holders.

Insert the metal shafts and nuts

Assemble the two front wheels.

Assemble the right side panel.

Install the left side panel.

Attach the side panels to the body panel.

Assemble the sensor unit:

• Assemble the right and left sides of the sensor pipe, then secure them with the pipe stoppers.
• Insert the wires from the board through the dome stopper and the sensor pipe.
• Install the sensor dome.
• Insert the completed unit into the front dome, then secure it with the stopper. (Attach the pipe stopper into the groove on the pipe)

Attach the rear dome to the side oanels and install the PCB.

Connect the wires from the sensor unit, then attach the front dome.

Install the battey holders to both sides of the panel.

Attach the motor holders to the side panels, castor and battery cover, and wires to the motors.

IV. ANALYSIS:

First, we had built almost all of the Line Tracker, but then we found out that some gears were wrong and it wasn't working properly. We had to take it all apart and carefully put it back together. It took us about 5 hours. That was just one problem, but it's not big. We also had another problem is the way the switch connected. We connected the switch wires backwards, instead of On now is off, and Off is On. No biggie though!!!

V. CONCLUSION:

We learned that you have to follow the instructions very carefully, in order to make Line Tracker work very well. You must also use team work if you are working in a team like us, because you'll find that you use to much time up arguing. Next time we shouldn't argue if we expect to work quickly. At least we finished. Now our Line Tracker is working wonderfully!