Creating a mini spectrometer for a smartphone and software for processing spectra

The article is devoted to the creation of a mini spectrometer for a smartphone in order to obtain spectra and display them on a smartphone screen. Mini-spectrometer based on the smartphone is used as a combined stand-alone system that allows performing spectroscopic measurements in real time in the field. The results of processing measurements can be stored in the memory of the smartphone or can be transferred to a remote station for better processing.