ARDUINO GREENHOUSE

I made this greenhouse using an arduino uno r3 and his protoshield, for the sensor i use a soil moisuture and a DHT 11. For displaying the data i planned to use an OLED display but i broke the flat cable while soldering it. So i use a traffic light for displaying the temperature in 3 level that can be calibrated for each plant, instead for the irrigation i use a green led that lights up when you need to irrigate. I planned to put an HC-05 sensor and create an app.