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TRANSCRIPT
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2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach
9797 NXT LEGO Kit:
Basic Car BuildingInstructions
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NXT Basic Car Building Instructions
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Table of Contents:
A. 2-Motor Car Page 3
B. 2-Motor Car Equipped With a Light Sensor Page 10
C. 2-Motor Car Equipped With a Touch Sensor Page 12
D. 2-Motor Car Equipped With a Skid Wheel Page 14
E. 2-Motor Car Equipped With a Swivel Wheel Page 17
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NXT Basic Car Building Instructions
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A.
2-Motor Car
Required Pieces:
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NXT Basic Car Building Instructions
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Step A.1: NXT Preparation
Side Views
Attach a double black connector peg and a single black connector peg to both sides of the
NXT. Connect the double peg vertically in the top most holes. The single peg should beconnected in the middle horizontal hole. Your NXT should look like the below picture
before moving on to the next step.
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Step A.2: Attach Motors to the NXT
Side View Top View
Attach the motors (one per side) to the NXT using the double black connector pegs andthe short black connector pegs attached to the NXT. The reddots in the side view identify
which holes on the motor attach to the pegs. Your NXT should look like the belowpicture before moving on to the next step.
Note: The top connection of the double black connector peg is not connected toanything.
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NXT Basic Car Building Instructions
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Step A.3: Support Motors
Take an 11-holed rounded beam and attach two short black connector pegs to the outsideholes as seen in the redsquare. Connect the pegs to the back of each motor (as identified
by the reddots) to further support the motors to the NXT. Your NXT should look like thebelow picture before moving on to the next step.
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Step A.4: Attach Wheels
Assemble 2rear wheel assemblies using a 6-length axle, a wheel, and a hub. Attach oneto each motor as seen below.
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Step A.5: Front Wheel Assembly Base
Take an L-beam and attach a black connector peg to the first and third hole on the smallerpart of the L. Take a small L-beam and attach a black connector peg to the first and third
hole on the larger part of the L. In the second hole between the two connector pegs oneach L-beam, attach an extended black connector peg. Also attach a friction axel to the
fourth hole on the small L-beam. Now attach two small L-beams to the protruding pins
below the other L-beams. Attach a black connector peg to the second hole on the smallpart of the L. Now attach an axel joiner on each of the protruding connector pegs belowthe small L-beams. Then, align the wheel between two half bushings and slide the 5-axel
through the axel joiners.
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Step A.6: Front Wheel Assembly Attachment
Connect the front wheel assembly to the bottom of the NXT at the protruding connector
pegs.
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B. Equipped With a Light Sensor
Required Pieces:
Car from Step A.6
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Step B.1: Light Sensor Assembly
Insert a black connector peg into the first and third holes of the 5-hole beam and anextended black connector peg into the fourth and fifth holes. Attach an axel joiner to theextended black connector pegs. Insert a friction axel into each hole of the axel joiners
and attach the light sensor to the friction axels.
Step B.2: Attach Sensor to the Car
Attach the light sensor to the car from Step A.6. The 5-hole beam should connect to the
top of the L-beam on the front wheel assembly.
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C. Equipped with a Touch Sensor
Required Pieces:
Car from Step A.6
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Step C.1: Touch Sensor Assembly
Attach the two black connector pegs to the first and third holes of the touch sensor.
Step C.2: Attach Sensor to the Car
Attach the touch sensor assembly to the car from Step A.6. The sensor should attach to
the top of the L-beam on the front wheel assembly.
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D. Skid Wheel
Required Pieces:
Car from step A.4
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Step D.1: Skid Wheel Assembly
Take an L-beam and attach a black connector peg to the first and third hole on the smaller
part of the L. Take a small L-beam and attach a black connector peg to the first and thirdhole on the larger part of the L. In the second hole between the two connector pegs on
each L-beam, attach an extended black connector peg. Also attach a friction axel to thefourth hole on the small L-beam. Now attach two small L-beams to the protruding pins
below the other L-beams. Attach a black connector peg to the second hole on the smallpart of the L. Now attach an axel joiner on each of the protruding connector pegs below
the small L-beams. Then, align the skid wheel between two half bushings and slide the5-axel through the axel joiners.
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NXT Basic Car Building Instructions
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Step D.2: Attach Skid Wheel to the Car
Connect the front skid wheel assembly to the bottom of the NXT at the protrudingconnector pegs. Follow the steps in Part B and Part C to attach sensors.
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E. Swivel Wheel
Required Pieces:
Car from step A.4
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NXT Basic Car Building Instructions
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Step E.1: Swivel Wheel Assembly
Take an L-beam and attach a black connector peg to the first and third hole on the smaller
part of the L. Take a small L-beam and attach a black connector peg to the first and thirdhole on the larger part of the L. Align a bushing over the second hole on the small L-beam. Align a half bushing followed by a bushing, 4-connector peg, and another half
bushing below the second hole on the small L-beam. Slide a 5-beam through thebushings and connector peg. Attach a wheel to the 4-connector peg.
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Step E.2: Attach Swivel Wheel to the Car
Connect the front swivel wheel assembly to the bottom of the NXT at the protrudingconnector pegs. Follow the steps in Part B and Part C to attach sensors.