Found this after looking into cheaper alternatives to yesterday's post on a DIY spectrometer with a raspberry pi [0]. Also interesting, and even cheaper, is a

Found this after looking into cheaper alternatives to yesterday's post on a DIY spectrometer with a raspberry pi [0]. Also interesting, and even cheaper, is a paper spectrometer which attaches to a phone camera by the same designer as this Lego one [1]. 0: https://news.ycombinator.com/item?id=30027804 https://news.ycombinator.com/item?id=30027804 1: https://publiclab.org/wiki/papercraft-spectrometer https://publiclab.org/wiki/papercraft-spectrometer