12
While covering the center light sensor, press and release the reset button.
Demo 3:
oBject Detection
infrared emitters
infrared detector
Step
1
When you hear the beep, uncover the light sensor.
Step
2
Infrared light shines from the emitters, even though your eyes cannot see it. The S2
can detect the light after it reflects off an obstacle and bounces back to its infrared
detector “eye.”
+
3
button
presses