Application Examples
Application Information
The REV Touch Sensor features an off-center button. Because this sensor requires a contact interface; the sensor must be mounted with regards to the location of the button and the object, or mechanism, intended to trigger the sensor.
Common applications for the Touch Sensor, such as limit switches, require consideration for unconstrained, or twisting motion. Limit switches limit the range of motion for a mechanism. If the mechanism is not properly constrained, there is a risk that the contact interface will not trigger the Touch Sensor.
FTC Applications
Configuring in the Control System
Configure the Touch Sensor as "REV Touch Sensor" as shown in the image below.
In this example, the Touch Sensor is configured on port one. It is touched on briefly in the Pinout Section that the Touch Sensor only sends a signal to the Control Hub through the n+1 communication channel. Because of this limitation, the Touch Sensor will only work when configured on the odd-numbered digital ports.
Programming Applications
The code blocks below give a basic example of how to use the Touch Sensor to limit the motion range of a motor using if/else logic. If the button is pressed then the motor stops. Otherwise, the motor is allowed to move.
To learn more about programming Touch Sensors check out Hello Robot for Blocks and OnBot Java!
The code assumes the sensor has been named "test_touch" and the motor has been named "test_motor" in configuration.