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THE LIGHT / DARK SENSOR

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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