No affiliation, just a happy customer. I initially explored the DIY way, but since this one has such good references, I decided to start with it and go from there having a better reference to compare against my DIY attempts.<p>Here you can find an independent review from a laser hobbyist perspective: <a href="https://www.laserdiscourse.org/t/inexpensive-i-phos-hd-370-950-nm-spectrometer-can-measure-1064-nm/181" rel="nofollow">https://www.laserdiscourse.org/t/inexpensive-i-phos-hd-370-9...</a>