Distance

Introduction

The Distance Sensor can detect whether an object is in front of the sensor and report how far away that object is.

Below is a list of available blocks:

• Distance found an object — Reports whether the Distance Sensor currently detects an object.

• object distance — Reports the distance between the Distance Sensor and the nearest detected object.

Distance found an object

The Distance found an object Boolean block reports whether the Distance Sensor currently detects an object within 2000mm.

• True — The Distance Sensor detects an object.

• False — The Distance Sensor does not detect an object.

    <[FrontDistance v] found an object?>

Parameters	Description
distance sensor	The Distance Sensor to use. Choose from the Distance Sensors available for the VR Robot.

Example

    when started :: hat events
    [Spin until the Distance Sensor detects an object.]
    turn [right v]
    wait until <[FrontDistance v] found an object?>
    stop driving

object distance

The object distance reporter block reports the distance between the Distance Sensor and the nearest detected object.

    ([FrontDistance v] distance in [mm v])

Parameters	Description
distance sensor	The Distance Sensor to use. Choose from the Distance Sensors available for the VR Robot.
unit	The distance unit: mm or inches.

Example

    when started :: hat events
    [Print the distance only after the Distance Sensor detects an object.]
    turn [right v]
    wait until <[FrontDistance v] found an object?>
    stop driving
    print ([FrontDistance v] distance in [mm v]) ▶