DIY smartphone spectrophotometer for Wine analysis

First of all thanks to theBiochemist for providing the original design!

I made it into a photometer for wine analysis according to the Glories method, which can be used to follow ageing processes. For this purpose, photometric measurements are made at 420 nm, 520 nm and 620 nm. Since the original was a bit too wobbly for me, I improved the connection between the LED holders and the cuvette holder. The power supply is external, I added a clamp for the cable.

Full documentation (sorry, in german only): https://forum.fruchtweinkeller.de/viewtopic.php?t=15001

More pictures of the project with bilingual description: https://www.instagram.com/fruchtweinkeller/