My own version of a spectrograph.
Original article of inspiration and .stl files: https://publiclab.org/notes/B-winters/12-14-2018/revised-3d-printable-mini-spectrometer
Theremino Spectrometer v2.9: https://www.theremino.com/en/downloads/automation#spectrometer
Beer Money Lab Facebook: https://www.facebook.com/Beer-Money-Lab-113868640341404
