Parallax S2 ROBOT Startup Manual page 10

Demo 2:
Light Seeking Behavior
2
button
presses
Step
1
While you cover the right light sensor, press and release the reset button.
Step
2
Listen for the beep, then uncover the light sensor.
The three light sensors can detect bright
light in front of the S2. One sensor looks
straight ahead, the other two look 30° to
the right and left.
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