On start, it should run a setup run, then it should automatically adjust the window cover by percentage of light the sensor is receiving. 

Say goodbye to closing windows with your hands, now you can make the sun close or open it for you! 

Adjustability:
 🌞=open or 🌞=close

Requirements:
 1x Arduino
 2x limit sensor (upside & downside of the window)
 1x light sensor
 1x servo motor