So I am trying to do this project without buying much anything. I want to set up a system where I can define a certain hex code/rgb code and have the led array make that colour. I figure with GPIO it shouldn't be that hard to code, but I just can't figure out how to get this working.
I want to just have a red led, blue led, and green led; each separately controlled. I would dial "intensity" up or down for each based on rgb code.
Is this feasible without buying some expensive expansion board or a big breadboard?
All help is appreciated.