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sonicSensor

Connection to ultrasonic sensor

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Description

This object represents a connection to an EV3 Ultrasonic Sensor (item number 45504). To measure the distance from the sensor to an object in meters, use this object with thereadDistancefunction.

Creation

Syntax

mysonicsensor = sonicSensor(myev3)
mysonicsensor = sonicSensor(myev3,inputport)

Description

example

mysonicsensor= sonicSensor(myev3)creates a connection to a ultrasonic sensor. You can use this connection with thereadDistancefunction to measure the distance from an ultrasonic sensor to an object.

If multiple ultrasonic sensors are attached to the EV3 brick, this function chooses the sensor that is attached to the EV3 input port with the lowest number.

example

mysonicsensor= sonicSensor(myev3,inputport)creates a connection to an ultrasonic sensor that uses a specific EV3 input port defined by theInputPortproperty.

Input Arguments

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Connection to EV3 brick, specified as a string that represents the object created usinglegoev3.

Example:myev3

Data Types:char

Output Arguments

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Connection to ultrasonic sensor, returned as an object handle.

Properties

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This property is read-only.

Number of the EV3 input port that the sensor uses, returned as a double.

Example:1

Data Types:double

Object Functions

readDistance Read distance from ultrasonic sensor to object

Examples

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Read the distance, in meters, between an ultrasonic sensor and an object.

Create a connection to the EV3 brick calledmyev3.

myev3 = legoev3
myev3 = legoev3 with properties: FirmwareVersion: 'V1.03E' HardwareID: [] IPAddress: [] CommunicationType: 'USB' BatteryLevel: 100 ConnectedSensors: {'touch' 'gyro' 'color' 'sonic'}

The sensor appears in the list of connected sensors.

Connect to the ultrasonic sensor.

mysonicsensor = sonicSensor(myev3)
mysonicsensor = sonicSensor with properties: InputPort: 4

Read the distance, in meters, from the ultrasonic sensor to the nearest object.

distance = readDistance(mysonicsensor)
distance = 0.4600

See Also

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Topics

MATLAB Support Package for LEGO MINDSTORMS EV3 Hardware Documentation

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Introducing Deep Learning with MATLAB

Introducing Deep Learning with MATLAB

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