Program Bumper Switch - VEX Coding Studio – STEM Library

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Step 1: Add two Bumper Switches to the robot configuration

Click, drag and drop two Bumper Switches from the list of smart devices into the user workspace.
Select Port A for the Bumper Switch on the right side and Port B for the switch on the left side.
Name the Bumper Switches as LeftBumper and RightBumper.

NOTE: A Bumper Switch v2 is a Three Wire Device.

NOTE: The configuration shown is for a V5 EDR Clawbot with two Bumper Switches on the C-Channel beam at the back of the robot. See this page for details.

Step 2: Begin a program

Click the Control command filter to access control commands and add a when (STARTED) command from the Control commands.
Add two setVelocity commands inside of the when (STARTED) command.
Set the Left Motor with a velocity of 25 percent and set the RightMotor with the same velocity.

NOTE: A setVelocity command is included under Settings commands.

Step 3: Add Actions commands

Add two spin commands below the setVelocity commands.
Set the first so that the Left Motor spins in reverse and the second so that the Right Motor spins in reverse.

NOTE: A spin command is included under Actions commands.

Step 4: Add a command so that the program waits until a condition is met

Add a waitUntil command from under the Control filter.
Add an and command from under the Operators filter, inside of the waitUntil command.
Insert two Bumper.pressing commands from under the Sensing filter inside of the and command.
Set the first pressing command to RightBumper.pressing and the second to LeftBumper.pressing.

Step 5: Set the commands to carry out when the condition is met

Add two stop commands from under the Actions filter.

Set one as the Left Motor and the other as the Right Motor.

NOTE: This program works best for stopping a V5 EDR Clawbot after it backs into a wide obstacle with a low wall or barrier.