基于Arduino的自动变色小夜灯（颜色识别传感器、RGB模块）

1、概述

通过手上现有的模块，做一个颜色识别感应灯。当周围环境颜色改变，RGB灯同时跟随环境颜色改变灯的颜色。适用氛围灯、卧室小夜灯等

对于模块不了解的，可以先看一下我们的模块教程[传送门]，了解掌握模块使用方法后，再尝试本小实验。因为综合实验一般涉及多个模块，我们仅对全部使用我司产品的客户做技术支持，若只是部分使用我司产品的，我们只对我司产品部分是否有故障进行排查。

2、所需材料

1、UNO主控板：官方板或者国产板
2、辅助配件：面包板、杜邦线
3、传感器和模块：RGB LED模块、颜色识别传感器

3、接线

RGB LED模块	Arduino
GND	GND
R	D3
G	D5
B	D6

颜色识别传感器	Arduino
GND	GND
S0	D8
S1	D9
S2	D10
S3	D11
OUT	D2
OE	GND

4、示例程序

#include <Metro.h> // 函数库
#include <math.h>
Metro ledlightup = Metro(60,true);
Metro processdata = Metro(50,true);
Metro TcsTrigger = Metro(10,true);

int s0=8,s1=9,s2=10,s3=11; // 颜色传感器端口定义
int out=2;
int flag=0; //变量初始化
int counter=0;
int countR=0,countG=0,countB=0;
void setup()
{
Serial.begin(115200);
pinMode(s0,OUTPUT);
pinMode(s1,OUTPUT);
pinMode(s2,OUTPUT);
pinMode(s3,OUTPUT);

analogWrite(3,0);
analogWrite(5,0);
analogWrite(6,0);

}

void TCS()
{
digitalWrite(s0,HIGH);
digitalWrite(s1,HIGH);
attachInterrupt(0, ISR_INTO, CHANGE);

}

void ISR_INTO()
{
counter++;
}

int Raverage = 0;
int Baverage = 0;
int Gaverage = 0;

void loop() // 函数调用
{
TCS();
if(TcsTrigger.check()){
Tcstrigger();
}
if(processdata.check()){
procedata();
}
if(ledlightup.check()){
ledup();
}

}
void Tcstrigger() // 数据采集
{
flag++;
if(flag==1){
digitalWrite(s2,LOW);
digitalWrite(s3,LOW);
countR=counter;
digitalWrite(s2,HIGH);
digitalWrite(s3,HIGH);
}
else if(flag==2){
countG=counter;
digitalWrite(s2,LOW);
digitalWrite(s3,HIGH);

}
else if(flag==3){
countB=counter;
digitalWrite(s2,LOW);
digitalWrite(s3,LOW);
flag=0;
}
counter=0;
}

void procedata() // 数据处理
{
static int Rinput[5] ={
0,0,0,0,0 }
,Binput[5] ={
0,0,0,0,0 }
,Ginput[5] ={
0,0,0,0,0 };

for(int i = 4;i > 0;i--){
Rinput[i] = Rinput[i-1];
Binput[i] = Binput[i-1];
Ginput[i] = Ginput[i-1];
}

if(countR < 2500)
Rinput[0] = countR;
else
Rinput[0] = Rinput[1];

if(countB < 2500)
Binput[0] = countB;
else
Binput[0] = Binput[1];

if(countG < 2500)
Ginput[0] = countG;
else
Ginput[0] = Ginput[1];

Raverage = 0;
0
Baverage = 0;
Gaverage = 0;

for(int i = 0;i <= 4;i++){
Raverage += Rinput[i];
Baverage += Binput[i];
Gaverage += Ginput[i];
}
Raverage /= 5;
Baverage /= 5;
Gaverage /= 5;

}

void ledup() //数据输出
{
int ledvalueR = Raverage;
int ledvalueG = Gaverage;
int ledvalueB = Baverage;

ledvalueR = constrain(ledvalueR,350,1700);
ledvalueB = constrain(ledvalueB,350,1500);
ledvalueG = constrain(ledvalueG,350,1650);
Serial.print("R:");
Serial.print(Raverage,DEC);
Serial.print(" ");
Serial.print(ledvalueR,DEC);
Serial.print("B:");
Serial.print(Baverage,DEC);
Serial.print(" ");
Serial.print(ledvalueB,DEC);
Serial.print("G:");
Serial.print(Gaverage,DEC);
Serial.print(" ");
Serial.println(ledvalueG,DEC);

ledvalueR = map(ledvalueR,350,1700,0,255);
ledvalueB = map(ledvalueB,350,1500,0,255);
ledvalueG = map(ledvalueG,350,1650,0,255);

analogWrite(3,ledvalueR);
analogWrite(6,ledvalueB);
analogWrite(5,ledvalueG);

}

在颜色传感器前放置不同的颜色，RGB灯对应的显示不同颜色。