Grumpy_Mike:
So that is basically the parallel configuration in reply 3. So you get 16 * number of analogue inputs you have. That would be a maximum of 128 inputs requiring 8 of those boards.
Is that enough?
Each board would be connected to the same set of four address pins from the Arduino
Yeah, I would need 8 of the Mux chips, im not going to buy the breakout board. I am making a PCB for the LDR array, so its no big deal to have 8 of the chips. If I order 10 it would cost £6, so not too expensive.