LED Bumper

Introduction

The LED Bumper can detect when it is pressed and can change its color or pattern to provide visual feedback.

Below is a list of all blocks:

• Set Bumper color — Tells the LED Bumper what color to be.

• Set Bumper brightness — Tells the LED Bumper what brightness to be at.

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

Set Bumper color

The Set Bumper color stack block tells the LED Bumper what color to be, or to turn off.

The LED Bumper can be used to track where the robot is at in a project or to show when certain conditions are met.

  set [bumper v] to [red v]

Parameters	Description
LED	The selected LED Bumper to change the color of, configured in the Devices window.
color	The color to set the LED Bumper to: red green off — Turns the LED off

Example

  when started :: hat events
  [Build Used: Super Code Base 2.0]
  [Blink the LED off and on.]
  forever
  set [bumper v] to [green v]
  wait [0.5] seconds
  set [bumper v] to [off v]
  wait [0.5] seconds

Set Bumper brightness

The Set Bumper brightness stack block tells the LED Bumper what brightness to be.

A higher percentage makes the light brighter. A lower percentage makes the light dimmer.

If the LED Bumper is off, setting the light power above 0% will turn the light on.

If the LED Bumper is on, setting the light power at 0% will turn the light off.

  set [bumper v] brightness to [50] %

Parameters	Description
LED	The selected LED Bumper to change the brightness of, configured in the Devices window.
brightness	The new brightness to set the LED Bumper to from 0% to 100% as a whole number.

Example

  when started :: hat events
  [Build Used: Super Code Base 2.0]
  [Light up the LED at different brightness levels.]
  set [bumper v] brightness to [25] %
  set [bumper v] to [green v]
  wait [2] seconds
  set [bumper v] brightness to [100] %

Bumper pressed

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

• True — The LED Bumper is being pressed pressed.

• False — The LED Bumper is not being pressed.

  <[bumper v] pressed?>

Parameters	Description
LED	The selected LED Bumper to check, configured in the Devices window.

Example

  when started :: hat events
  [Build Used: Super Code Base 2.0]
  [Turn right when the bumper is pressed.]
  turn [left v]
  wait until <[bumper v] pressed?>
  turn [right v]