Hi, so. I don't know a lot of electronics but this is effectively what I'm trying to create: A photo diode controls the circuit, I assume they give out a current proportional to the intensity of the light it receives. The ciruit, depending on the light intensity will light up different LED's. Also, there would need to be an ability to adjust this..I guess by having a rheostat connected to the photo diode. Any help would be appreciated, I love to learn.