THE LIGHT / DARK SENSOR |
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V.Ryan © 2005 | |
For this exercise a light / dark sensor will be added to the
front of the buggy.
The sensor looks like many of the other Lego bricks but it
has two LEDs (lights on one side) - one emits light and the
other detects the level of reflected light. In simple terms
it detects dark or light.
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