Introduction
ZpecSen is (was?) a crowdfounded project by some Thai(?) scientists (working at the Spectroscopic and Sensing Devices Research Group part of Nectec) to create a handheld spectromter fr both gases and liquids. It a mobile phone, both the camera for acquiring the spectral signal and as a processor. The wavelength range is thus compatibile with the visible bands, 450 nm – 700 nm. It can be used for analysing open samples (solids) and cuvettes (liquids). It can hold 4 different light sources, dual cuvettes and have built-in spectral calibration. The shell is 3D printed.
There is a Youtube presentation available. The cost for signing up for a single unit was 90 to 100 AUD (Australian dollar, equivalent to approximatel 70 to 75 USD), dependent on equipemnt. The project supposedly ended in February 2021; it is unclear if any units were sold or if the project continues.
The ZpecSen spectrometer is presented in the scientific article A Low-Cost Dual-Beam Smartphone Visible Spectrometer.