Prototype Design of Automatic Light Intensity Control in Smart Green House

Lack of sunlight will interfere with the process of photosynthesis and the growth of plants. The amount of needs on each plant depends on the needs of plants. Lack of light will cause symptoms of ethiolasi, i.e. the stem will grow smaller and pale (not green). Therefore, Roof Retractable System is the solution to the problem. The system is equipped with Grow LED that can provide light intensity differ according to the type of plant, for example, Pakcoy needs light 12000 lux, and Lettuce requires light 4305 lux. The result of the Variation of Grow LED is produced by utilizing dimmer rotation controlled by Arduino Mega, Light Intensity Requirement (BH1750) which is then able to be monitored through the Website. Retractable Roof works automatically based on seed and Planting Modes so that it can be seen the response of light intensity values that adjust to the Servo Motor and Growing LED. Test results from Morning to Afternoon Light Intensity following Table 4.5. Where if the Lux value is less than setpoint which is 5000, then Dimmer will create an angle that has been summed up with the existing Lux value in that hour, and then if Lux <.=100 then dimmer will show angle 225 or maximum.