The document describes an automatic room light intensity based window blinds control system that opens and adjusts the angle of window blinds based on outdoor sunlight intensity readings from a light dependent resistor sensor. This is intended to utilize natural sunlight for indoor lighting and save on electricity costs for lighting. A microcontroller senses the sunlight intensity, determines the appropriate blinds opening angle, and controls a stepper motor via a motor driver to adjust the blinds position accordingly. The system is intended to save households 20-30% on monthly electricity bills for lighting.