LCS_RGB_POT.ino

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int row = 0;
#define Pot1 A0
#define Pot2 A1
#define Pot3 A2
int Pot_1_blue = 0;
int Pot_2_green = 0;
int Pot_3_red = 0;

void setup() {
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
  pinMode(3, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  Serial.begin(9600);
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  lcd.cursor();
}

void loop() {
  Pot_1_blue = map(analogRead(Pot1),0,1024,0,255);
  Pot_2_green = map(analogRead(Pot2),0,1024,0,255);
  Pot_3_red = map(analogRead(Pot3),0,1024,0,255);

  analogWrite(3,Pot_1_blue);
  analogWrite(5,Pot_2_green);
  analogWrite(6,Pot_3_red);

  // put your main code here, to run repeatedly:
  lcd.setCursor(6,0);
  lcd.print("RGB");
  lcd.setCursor(0,1);
  lcd.print("R:");
  lcd.print(Pot_3_red);
  lcd.setCursor(5,1);
  lcd.print("B:");
  lcd.print(Pot_1_blue);
  lcd.setCursor(11,1);
  lcd.print("G:");
  lcd.print(Pot_2_green);
  delay(100);
  lcd.clear();
  clearLCD();
}

void clearLCD()
{
  if(Pot_3_red<100)
  {
    lcd.setCursor(4,0);
    lcd.print("");
  }else if(Pot_3_red<10)
  {
    lcd.setCursor(3,0);
    lcd.print("");
  }

  if(Pot_1_blue<100)
  {
    lcd.setCursor(9,0);
    lcd.print("");
  }else if(Pot_3_red<10)
  {
    lcd.setCursor(8,0);
    lcd.print("");
  }

  if(Pot_2_green<100)
  {
    lcd.setCursor(15,0);
    lcd.print("");
  }else if(Pot_3_red<10)
  {
    lcd.setCursor(14,0);
    lcd.print("");
  }

}