Pupil Worksheet
Robosports
The Cannon Attack
A photoelectric cell will register if a log is
approaching. When the cell is activated the
following set of instructions will run:
·
wait x seconds
·
start motor A to turn the turntable to
the left
·
start the `cannon firing' timer
·
switch on the light (fuse)
·
stop motor A when the turntable
activates the proximity sensor
·
when the `cannon firing' stops, start the
sound (cannon firing and cannon ball
splash down)
·
stop the light and sound
·
wait x seconds
·
reverse motor A to turn the turntable
to the right
·
stop motor A when the turntable
activates the proximity sensor.
Pupil Name __________________________________________________
The Cannon Attack
During the ride at the Pirate Falls you saw a lot of moving
LEGO models in the various scenes you passed. Some
of them move all of the time. Others move only
when they receive a signal from sensors
(photoelectric cells) which tell the models
that a log is approaching.
One of the sensor-prompted
scenes from the ride is
illustrated below. Do you
remember what happened?
Write down the series of instructions that you think were passed to make the
model move.
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Teacher hints, cover this part of the worksheet before photocopying.
