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LegoEngineering.com Bulldozer -RCX
6-1
Suggested Time
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Challenge
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Age
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Topics
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Subjects
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Programming
Themes
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Related Math &
Scineces Concepts
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Materials
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Building
Instructions
90 minutes
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In this activity, design and construct an RCX sturdy car and program it to
be controlled by touch sensors that can push “dirt”
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8-13
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Touch Sensors
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Engineering &Technology
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Motor Forward, Wait For Touch, Task Split, & Jumps/Lands
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• Gears
• Wheels and Axles
• Acceleration
• Velocity
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• RCX Car
• 2 Touch Sensors
• Dirt Reprsented by LEGO Pieces, Cotton Balls, etc.
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1. Build a bulldozer by attaching a plow to the front of the RCX with
skid plates.
Bulldozer - RCX
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Programming
Instructions
2. Wire the motors to the outputs of the RCX.
3. Make a touch sensor controller, and wire the inputs to the RCX.
• Building Hints
o 2 motors are essential in order to allow the bulldozer to turn.
o Turning is easier to accomplish if a free spinning wheel or skid
plates are used.
───────────────────────────────────────── Choose whether to use ROBOLAB or the LEGO NXT Software to program (Note: You
cannot use the LEGO NXT Software if you chose to build your amusement park ride
using the RCX).
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Building and
Programming
References
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Related Activities
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Knowledge Base
• Here is an example ROBOLAB INVENTOR 4 program:
• Click here to Download the example Robolab software:
http://www.legoengineering.com/activities/media/553amusementpark.vi
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• Building With Bricks
• Building With Plates
• Building With Beams
• Axle Uses
• Connector Pegs & Bushings
• Hubs and Tires
• The RCX, RCX Motors and Wires,
RCX Touch Sensors
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• Sturdy Car: The Drop Test
• Things That Go Bump
• Platform 9 3/4
• Fan-tastic
• Voting Booth
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• My car falls or tips backward when I drive.
• My car drives but not straight.
• Can you create a program that will use the touch sensor to control the
direction of the motors?
• Is it possible to load programs on 2 different RCX's at the same time?
LegoEngineering.com Bulldozer -RCX
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Classroom
Management
• I tried to use a loop but nothing
happened.
