Alat Pendeteksi Warna Menggunakan Sensor LDR Berbasis Arduino Unop

(1)

LAMPIRAN

#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins

LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

int sensorPin = A0;

int LedBiru =8; // Led warna biru digital pin 8

int LedHijau=9; // Led warna hijau digital pin 9

int LedMerah=10; // Led warna merah digital pin 10

int hasil,hasilb,hasilm,hasilh;

int k=15; // toleransi warna

void setup() {

// declare the ledPin as an OUTPUT:

pinMode(LedBiru,OUTPUT);

pinMode(LedMerah,OUTPUT);

pinMode(LedHijau,OUTPUT);

digitalWrite(LedBiru,LOW);

digitalWrite(LedMerah,LOW);

digitalWrite(LedHijau,LOW);

lcd.begin(16,2);

lcd.setCursor(0,0);

lcd.print(" Yenita Sari STMG");

lcd.setCursor(0,1);

lcd.print("132411041");

delay(300);

for (int positionCounter = 0; positionCounter < 16; positionCounter++) {

// scroll one position right:

lcd.scrollDisplayRight();

// wait a bit:

delay(200);

}

for (int positionCounter = 0; positionCounter < 40; positionCounter++) {

// scroll one position left:

(2)

lcd.scrollDisplayLeft();

// wait a bit:

delay(300);

}

void loop() {

lcd.clear();

// nyalakan LedMerah

digitalWrite(LedMerah,HIGH);

//delay 150 ms agar LDR baca stabil

delay(150);

// baca data sensor

hasil= analogRead(sensorPin);

hasilm=map(hasil,0,1023,0,255);

lcd.print("R,G,B");

lcd.print(hasilm);

digitalWrite(LedMerah,LOW);

delay(150);

// nyalakan LedHijau

digitalWrite(LedHijau,HIGH);

delay(150);

// baca data sensor

hasilh=map(hasil,0,1023,0,255);

lcd.print(",");

lcd.print(hasilh);

digitalWrite(LedHijau,LOW);

delay(150);

// nyalakan LedBiru

digitalWrite(LedBiru,HIGH);

(3)

delay(150);

// baca data sensor

hasilb=map(hasil,0,1023,0,255);

lcd.print(",");

lcd.println(hasilb);

digitalWrite(LedBiru,LOW);

delay(150);

// cek warna dibandingkan dengan nilai hasil kalibrasi

if(abs(hasilm-145)<k && abs(hasilh-115)<k && abs(hasilb-160)<k){

lcd.setCursor(0,1);

lcd.print("WARNA BIRU MUDA");

}

else if(abs(hasilm-158)<k && abs(hasilh-120)<k && abs(hasilb-121)<k){

lcd.setCursor(0,1);

lcd.print("WARNA HIJAU");

}

lcd.setCursor(0,1);

lcd.print("WARNA UNGU");

}

lcd.setCursor(0,1);

lcd.print("WARNA ORANGE");

}

lcd.setCursor(0,1);

lcd.print("WARNA KUNING");

}

lcd.setCursor(0,1);

lcd.print("WARNA HITAM");

}