Small Car built with Lego

Please see the disclaimer for more information.

The images for the Steps were rendered with MLCAD 1.9 Rel 4 , here is the source file: CarSmall.mpd
The raytracing pictures were rendered using l3p and POV.
The parts list: Parts.txt
Here is some sample code, that lets the car drive until it hits an obstacle. It stops, drives backward a short while and resumes driving forward again, steering inbetween.
Note: The Rotation Sensor from Step 10 is not yet an official part!
Note: See the code and look for the defines I used to describe the connections from the motors ans sensors to the RCX:

// ROTATION: Rotation Sensor for Steering
// FRONTBUMPER: Front Bumper
// BACKBUMPER: Back Bumper
#define ROTATION SENSOR_3
#define FRONTBUMPER SENSOR_2
#define BACKBUMPER SENSOR_1

// DRIVE: Drive Motor
// STEER: Steering Motor
#define DRIVE OUT_A
#define STEER OUT_B

Car Front Bumper 2 Arms

Step 1

1 x	Technic Axle 2
1 x	Technic Axle 3 with Stud
1 x	Technic Bush
1 x	Technic Bush 1/2 Smooth
1 x	Technic Liftarm 1 x 3

Step 2

2 x	Technic Axle 12
1 x	Technic Liftarm 1 x 3
1 x	Technic Liftarm 1 x 9 Bent
1 x	Technic Pin 3/4

Step 3

1 x	Technic Axle 2
1 x	Technic Bush 1/2 Smooth
1 x	Technic Liftarm 1 x 3
1 x	Technic Liftarm 1 x 9 Bent
1 x	Technic Pin 3/4

Step 4

2 x	Technic Axle 12
1 x	Technic Liftarm 1 x 3

Step 5

2 x	Technic Brick 1 x 2 with Axlehole
1 x	Technic Brick 1 x 4 with Holes

Step 6

2 x	Brick 1 x 1
1 x	Plate 2 x 3
2 x	Slope Brick 45 2 x 1

Step 7

2 x	Plate 1 x 2
1 x	Technic Brick 1 x 2 with Axlehole
1 x	Technic Pole Reverser Handle

Step 8

2 x	Plate 2 x 2 Corner

Step 9

1 x	Technic Bush 1/2 Smooth

Small Steering Motor And Gears

Step 10

1 x	Electric Rotation Sensor complete assembly shortcut
2 x	Technic Axle 4
1 x	Technic Gear 8 Tooth
1 x	Technic Gear 24 Tooth

Step 11

1 x	Electric Brick 2 x 2 x 2/3 with Wire End
1 x	Electric Technic Micromotor
1 x	Electric Technic Micromotor Base
1 x	Electric Technic Micromotor Pulley
1 x	Electric Technic Micromotor Top
1 x	Technic Brick 1 x 6 with Holes
1 x	Technic Gear 8 Tooth

Motor and gear

Step 12

1 x	Electric Technic Mini-Motor 9v
1 x	Technic Bush 1/2 Smooth
1 x	Technic Gear 12 Tooth Bevel

Motor and rear axle

Step 13

2 x	Plate 1 x 2 with 1 Stud

Step 14

2 x	Plate 1 x 2 with Door Rail
2 x	Plate 1 x 3
2 x	Technic Axle 6
1 x	Technic Brick 1 x 8 with Holes
1 x	Technic Differential
3 x	Technic Gear 14 Tooth Bevel
2 x	Technic Pin 3/4

Step 15

2 x	Plate 1 x 2 with 1 Stud
2 x	Plate 1 x 2 with Door Rail
2 x	Plate 1 x 3
1 x	Technic Brick 1 x 8 with Holes
2 x	Technic Pin 3/4
1 x	Motor and gear from Step 12

Step 16

2 x	Plate 2 x 3

Step 17

1 x	Electric Brick 2 x 2 x 2/3 with Wire End
4 x	Plate 2 x 2 Corner

Step 18

1 x	Plate 4 x 4

Back Bumper

Step 19

1 x	Electric Brick 2 x 2 x 2/3 with Wire End
3 x	Plate 2 x 2 Corner

Step 20

1 x	Technic Angle Connector #1
1 x	Technic Angle Connector #5
1 x	Technic Axle 2 Notched
1 x	Technic Axle 4
1 x	Technic Brick 1 x 2 with Holes

Step 21

2 x	Technic Axle 3
1 x	Technic Bush
2 x	Technic Bush 1/2 Smooth
2 x	Technic Liftarm 1 x 7
4 x	Technic Pin with Friction

Step 22

2 x	Technic Liftarm 2 x 4 L Shape
4 x	Technic Pin with Friction

Step 23

1 x	Plate 2 x 3
2 x	Technic Liftarm 2 x 4 L Shape

Car Small

Step 24

1 x	Plate 2 x 4
1 x	Plate 4 x 4
2 x	Technic Brick 1 x 12 with Holes
2 x	Technic Pin Long with Friction
2 x	Technic Pin with Friction

Step 25

2 x	Plate 1 x 1
1 x	Plate 1 x 2
1 x	Plate 1 x 6
1 x	Plate 2 x 4
1 x	Technic Axle 8
1 x	Technic Axle Pin
2 x	Technic Brick 1 x 2 with Holes
4 x	Technic Brick 1 x 4 with Holes
1 x	Technic Brick 1 x 10 with Holes
2 x	Technic Pin
2 x	Technic Pin Long with Friction
2 x	Tile 1 x 2
1 x	Tile 2 x 2

Step 26

2 x	Technic Liftarm 1 x 3

Step 27

1 x	Electric Touch Sensor Brick 3 x 2 (Complete Assembly Shortcut)
1 x	Technic Axle Pin
1 x	Technic Bush
2 x	Technic Bush 1/2 Smooth
2 x	Technic Liftarm 1 x 3

Step 28

1 x	Plate 1 x 2
1 x	Plate 1 x 6
2 x	Plate 2 x 8
2 x	Technic Axle 3 with Stud
2 x	Technic Axle Joiner Perpendicular 3 Long
2 x	Technic Axle Pin
1 x	Technic Brick 1 x 10 with Holes
2 x	Technic Bush
2 x	Technic Plate 1 x 4 with Holes
2 x	Technic Steering Arm with Connectors
1 x	Motor and rear axle from Step 18

Step 29

1 x	Plate 1 x 6
1 x	Plate 2 x 2
1 x	Plate 2 x 3
1 x	Plate 2 x 4
2 x	Technic Brick 1 x 2 with Hole
1 x	Technic Brick 1 x 6 with Holes
1 x	Technic Gear Rack 1 x 4
1 x	Small Steering Motor And Gears from Step 11

Step 30

2 x	Technic Brick 1 x 12 with Holes
2 x	Technic Liftarm 1 x 5
2 x	Technic Liftarm 1 x 7
4 x	Technic Pin 3/4

Step 31

1 x	Technic Bush
1 x	Back Bumper from Step 23
1 x	Rubber Band Blue (not shown in the following steps)

Step 32

2 x	Tyre 43.2 x 28 Balloon Small
2 x	Wheel 43.2 x 28 Balloon Small

Step 33

1 x	Technic Axle 10
1 x	Technic Bush
1 x	Car Front Bumper 2 Arms from Step 9

Step 34

1 x	Electric Mindstorms RCX (Complete Assembly Shortcut)
2 x	Electric Touch Sensor Brick 3 x 2 (Complete Assembly Shortcut)
2 x	Technic Bush
2 x	Tyre 43.2 x 28 Balloon Small
2 x	Wheel 43.2 x 28 Balloon Small

Step 35

8 x	Electric Brick 2 x 2 x 2/3 with Wire End
2 x	Rubber Band Blue

Markus Matern, February 2002