> there are multispectral sensors from ams osram []

"Spectrograph" on a chip! Tnx!

[1] sensors (click a "Select Product" button for url-too-long product search) https://ams-osram.com/products/sensor-solutions/ambient-ligh... [2] ~14 channel https://ams-osram.com/products/sensor-solutions/ambient-ligh... https://www.adafruit.com/product/6477 $20 [3] ~18 channel https://ams-osram.com/products/sensor-solutions/ambient-ligh... https://www.sparkfun.com/sparkfun-triad-spectroscopy-sensor-... $70

410-940 nm. There's a UV[ABC] chip in preproduction.