 DeviceAddress red   = { 0x28, 0xFF, 0xA9, 0xB4, 0x62, 0x15, 0x03, 0x0C }; 
 DeviceAddress green = { 0x28, 0xFF, 0xF5, 0xB3, 0x62, 0x15, 0x03, 0x3E };
 
-LiquidCrystal lcd(0x27, 16, 2);
+LiquidCrystal_I2C lcd(0x27, 16, 2);
 
 const int delayTime = 500;
 const String topLine = "Derby Grammar";

  sensors.begin();
  sensors.setResolution(black, 10);
  sensors.setResolution(red, 10);
  sensors.setResolution(green, 10;
}

void loop() {
  sensors.requestTemperatures():

  printToLCD(black, "Black");
  delay(delayTime);

  if(sensorName.length() == 3) { //ie name is red  
    lcd.print(sensorName + ":   " + tempC);
  } else {
    lcd.print(sensorName + ": " + tempC);
  }
  
}
