com.raspoid.additionalcomponents

Class TrackingSensor

java.lang.Object

com.raspoid.GPIOComponent

com.raspoid.additionalcomponents.TrackingSensor

All Implemented Interfaces:

Component

public class TrackingSensor
extends GPIOComponent

The infrared tracking sensor uses a TCRT5000 sensor. The blue LED of the TCRT5000 is the emission tube and after electrified it emits infrared light invisible to human eye. The black part of the sensor is for receiving; the resistance of the resistor inside changes with the infrared light received.

Datasheet: tcrt5000

Note: working distance: 12mm from the support (5mm from the leds).

Example of use: TrackingSensorExample

Field Summary

Fields

Modifier and Type	Field and Description
protected com.pi4j.io.gpio.GpioPinDigitalInput	digitalInput

Fields inherited from class com.raspoid.GPIOComponent

gpio

Constructor Summary

Constructors

Constructor and Description
TrackingSensor(GPIOPin pin) Constructor for a tracking sensor using a specific Gpio pin from the Raspberry Pi.

Method Summary

Modifier and Type	Method and Description
com.pi4j.io.gpio.GpioPinDigitalInput	getGpioPinDigitalInput() Get the pi4j GpioPinDigitalInput used for this tracking sensor.
boolean	whiteDetected() Returns true if white color is detected.

Methods inherited from class com.raspoid.GPIOComponent

getType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

digitalInput

protected final com.pi4j.io.gpio.GpioPinDigitalInput digitalInput

Constructor Detail

TrackingSensor

public TrackingSensor(GPIOPin pin)

Constructor for a tracking sensor using a specific Gpio pin from the Raspberry Pi.

Parameters:

pin - the pin to use to manage the tracking sensor.

Method Detail

whiteDetected

public boolean whiteDetected()

Returns true if white color is detected.

Returns:

true if white color is detected.

getGpioPinDigitalInput

public com.pi4j.io.gpio.GpioPinDigitalInput getGpioPinDigitalInput()

Get the pi4j GpioPinDigitalInput used for this tracking sensor.

This can be usefull to add custom listeners to easily react when the tracking state changes.

Returns:

the pi4j GpioPinDigitalInput corresponding to this tracking sensor.