int led_red = 18;
int led_green = 17;
int led_blue = 16;
float sensor = 0;
int x = 0 ;

void setup() {

  Serial.begin(115200);

  pinMode(18, OUTPUT);   //This is for RGB light
  pinMode(17, OUTPUT);   //This is for RGB light
  pinMode(16, OUTPUT);   //This is for RGB light
}

void loop() {

sensor = analogRead(27);

Serial.print(sensor);
Serial.print("   ");
x = map (sensor,32,4063,0,100);
Serial.println(x);


// This code is for High & Colour changing

if (x<75)
{
   digitalWrite(led_red, HIGH);
}

}