LEGO Mindstorms EV3 User Manual - Page 14
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EV3 TECHNOLOGY
EV3 Sensors
Touch Sensor
The Touch Sensor is an analog sensor that can detect when
the sensor's red button has been pressed and when it is released.
That means the Touch Sensor can be programmed to action using
three conditions—pressed, released, or bumped (both pressed and
released).
Using input from the Touch Sensor, a robot can be programmed
to see the world as a blind person might, reaching a hand out and
responding when it touches something (pressed).
You might build a robot with a Touch Sensor pressed against
the surface beneath it. You might then program the robot to respond
(Stop!) when your robot is about to drive off the edge of a table (when
the sensor is released).
A fighting robot might be programmed to keep pushing forward
against its challenger until the challenger retreats. That pair of
actions—pressed, then released—would constitute bumped.
For more information, see Using the Touch Sensor in the EV3
Software Help.
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Touch Sensor
Pressed
Released
Bumped
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