Bumper

Introduction

The Bumper Switch is a mechanical switch that completes a circuit when pressed, allowing the robot to detect presses and releases.

Below is a list of available blocks:

• Bumper pressed — Reports a Boolean indicating if the Bumper Switch is being pressed.

• when Bumper — Runs the attached stack of blocks when the Bumper Switch is pressed or released.

Bumper pressed

The Bumper pressed Boolean block reports whether or not a Bumper Switch is being pressed. This can be used to check if the robot bumps into other objects.

• True — The Bumper Switch is being pressed.

• False — The Bumper Switch is not being pressed

    <[LeftBumper v] pressed?>

Parameters	Description
bumper sensor	The Bumper Sensor to check.

Example

    when started :: hat events
    [Back up and turn whenever the bumper runs into an object.]
    forever
    drive [forward v]
    if <[LeftBumper v] pressed?> then
    drive [reverse v] for (100) [mm v] ▶
    turn [right v] for (90) degrees ▶

when Bumper

The when Bumper hat block runs the attached stack of blocks when the selected Bumper Switch is pressed or released.

    when [LeftBumper v] [pressed v] :: hat events

Parameters	Description
bumper sensor	The Bumper Sensor to check.
state	When the attached stack of blocks will run: pressed will run when the Bumper Switch is pressed down, and released runs when the Bumper Switch is released.

Example

    when started :: hat events
    drive [forward v]

    when [LeftBumper v] [pressed v] :: hat events
    [Reverse when the left bumper is pressed.]
    drive [reverse v] for [200] [mm v] ▶