LEGO Mindstorms education 9797 User manual

© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach
9797 NXT LEGO Kit:
Basic Car Building
Instructions

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 2
Table of Contents:
A.2-MotorCar Page3
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

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 3
A. 2-Motor Car
Required Pieces:

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 4
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 be
connected in the middle horizontal hole. Your NXT should look like the below picture
before moving on to the next step.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 5
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 and
the short black connector pegs attached to the NXT. The red dots in the side view identify
which holes on the motor attach to the pegs. Your NXT should look like the below
picture before moving on to the next step.
Note: The top connection of the double black connector peg is not connected to
anything.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 6
Step A.3: Support Motors
Take an 11-holed rounded beam and attach two short black connector pegs to the outside
holes as seen in the red square. Connect the pegs to the back of each motor (as identified
by the red dots) to further support the motors to the NXT. Your NXT should look like the
below picture before moving on to the next step.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 7
Step A.4: Attach Wheels
Assemble 2rear wheel assemblies using a 6-length axle, a wheel, and a hub. Attach one
to each motor as seen below.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 8
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 smaller
part 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 on
each 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 small
part of the L. Now attach an axel joiner on each of the protruding connector pegs below
the small L-beams. Then, align the wheel between two half bushings and slide the 5-axel
through the axel joiners.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 9
Step A.6: Front Wheel Assembly Attachment
Connect the front wheel assembly to the bottom of the NXT at the protruding connector
pegs.

NXT Basic Car Building Instructions
© 2008 LEGOengineering.com & Tufts University Center for Engineering Educational Outreach 10
B. Equipped With a Light Sensor
Required Pieces:
Car from Step A.6