DESIGN AND MAKING DIGITAL LUX METER BASED ON EL7900 LIGHT SENSOR

Has been made prototype of the EL7900 light sensor-based digital lux meter will be made. By using the R8C / 13 microcontroller as a process unit and display the results of the process on the LCD. Tool performance has shown that there is a linear relationship between the correctness of the sensor output voltage and the intensity displayed on the LCD. The truth of this tool has been calibrated with Hioki 3422 standard lux meter and data shows that the intensity produced by the EL7900 digital lux meter is within the standard deviation range of standard lux meter intensity with an average error of 0.49%. And the sensitivity of the EL7900 sensor lies in the yellow area.

Keywords: EL7900 Sensor, R8C / 13 Microcontroller, Lux Meter, Intensity, Sensitivity. Display