Light is important physiological effects that determine the development of vegetation. Light intensity and measurements are important for agriculture and livestock. In this study, a cost effective and portable luxmeter was developed for agricultural purposes using Arduino and GY-30 sensor module and compared with a commercial device. The regression results between 0.945 and 0.969 (very high) obtained in study were in agreement with the recent studies It was understood that the developed system showed results compatible with commercial luxmeter devices.