I recently decided to take my first dive into the arduino pool and have come up with what I thought was a fairly simple project. However, after pondering on the details for a short time I realized I might have more work ahead of me than I thought. The problem is that I need to be able to read analog input from 10 different photocells and use that information to control the output of 10 corresponding digital I/O pins. This is a problem since the arduino only has 6 analog input pins. I thought for a bit that I could multiplex the inputs using a 3/8 multiplexer, but that would require the use of 3 digital I/O pins, thereby leaving me at least 1 short in that department since there are only 12 available to begin with.
I guess my question is, short of getting another board is there any way to have read so many inputs and still have control over so many outputs individually?
EDIT: I should also mention that the digital I/O pins are to be driving individual transistors which are in turn driving 6 LED's each.