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LEGO Robot Resources
Light Sensors
for more detailed info and circuit diagrams visit the Electronics page

The light sensors connect to the Analogue to Digital (AD) converter and will produce a voltage that is proportional to the amount of light falling on the sensor. The robot controllers analogue to digital converter will take this voltage and convert it into a real number value.

The light sensors use components called LDR's or Light Dependant Resistors as the sensing element. These are sensitive to light over a reasonably large part of the light spectrum and have a wide field of view so they will pick up light from wide angles.

Light sensor
- Side view
Light sensor
- Bottom view
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