Thanks for the tip. I wonder if you know how I could approach the other side. For example :
This seems very do-able, I get this. I dont know how I would concert this input with the LED matrix. Hopefully this question is clear. To restate how could I make an led turn on when when of the phtoresistors is exposed to light. I posted a chart that I would use to make sort of a binary signal from the Voltage divider, but I cant find a tutorial on how to link that with the matrix driver. Writing that code from scratch/modifying something would be hard for me but i am up to learn. Do you have any tips or hints to this end?