Abstract

• The ML8511 UV sensor detects 280 nm – 390 nm light, this wavelength is categorized as part of the UVB-burning rays spectrum and most of the UVA-tanning rays spectrum. The sensor ML8511 has a UV photodiode and internal amplifier which will converts photo current to voltage output depending on the UV light intensity. UV intensity is directly proportional to output voltage so that the program is written according to their relation. The UV intensity in mW/cm^2 is displayed on LCD which is processed by Arduino microcontroller. At the same time, data are sent to the Microsoft (MS) excel spreadsheet via parallex data acquisition (PLX-DAQ) software. Data accompanying with current date and time are uploaded directly from Arduino to MS excel spreadsheet.