com.raspoid.additionalcomponents

Class Photoresistor

java.lang.Object

com.raspoid.AnalogComponent

com.raspoid.additionalcomponents.Photoresistor

All Implemented Interfaces:

Component

public class Photoresistor
extends AnalogComponent

A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity.

Unlike infrared detectors, photocells are good at detecting yellow/green visible light, but not infrared light.

This component uses an ADC (Anolog to Digital Converter) to transform the analog signal generated by the photoresistor variations.

Example Datasheet: Photoresistor

Example of use: PhotoresistorExample

See Also:

ADC

Field Summary

Fields inherited from class com.raspoid.AnalogComponent

adc

Constructor Summary

Constructors

Constructor and Description
Photoresistor(ADC adc, ADCChannel photoresistorChannel) Constructor for a photoresistor using a specific ADC instance, and a specific channel on this ADC to decode the analog input from the photoresistor.

Method Summary

Modifier and Type	Method and Description
int	getIntensity() Get the light intensity read from the photoresistor.

Methods inherited from class com.raspoid.AnalogComponent

getADC, getType

Methods inherited from class java.lang.Object

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

Constructor Detail

Photoresistor

public Photoresistor(ADC adc,
                     ADCChannel photoresistorChannel)

Constructor for a photoresistor using a specific ADC instance, and a specific channel on this ADC to decode the analog input from the photoresistor.

Parameters:

adc - the ADC to use to decode analogic signals from the photoresistor.

photoresistorChannel - the channel on the ADC used to read inputs from the photoresistor.

Method Detail

getIntensity

public int getIntensity()

Get the light intensity read from the photoresistor.

Returns:

the light intensity read from the photoresistor.