Design and development of measurement of measuring light resistance using Light Dependent Resistance (LDR) sensors

Abstract

Light Dependent Resistance (LDR) is one type of resistor whose resistance value is affected by the intensity of light received by it. This study aims to measure the amount of resistance in each color of light measured in the LDR. The research method is done by making a measurement device in which a light source parallel to the LDR is placed, where the color layer is inserted which will change the white light from the lamp to the color light according to the color layer used. The variation in distance (x) between the lamp and LDR causes greater resistance. The results of this study indicate that 1) the distance of the light source is inversely proportional to the intensity of light, 2) The distance of the light source is directly proportional to the magnitude of resistance, 3) The intensity of light is inversely proportional to resistance, and 4) the dominant large resistance value is in the dominant blue light the value of large light intensity is in the color of yellow light.