Parallax S2 ROBOT Startup Manual page 8

Demo 1: Light SenSorS
1
button
press
Step
1
Step
2
light sensors
The S2 has 3 light sensors. If you place
your finger on a light sensor, the S2 can
"see" it because you have blocked out
the light shining on the sensor.
Place your S2 on the floor in a brightly
lit room.
Put the power switch in the "ON"
position.
You will hear a song, and all 3 LEDs will
light up. The LEDs will be green in a
bright room and yellow in a dim room.
8