Best I/O expander to get started with

I did a search and came up with a few I/O expanders to use with the Arduino, notably the PCF8575C. My application requires a minimum of 12 analog inputs. Since I am a beginner, do you have any other I/O board recommendations that are easy to use with available online tutorials?

My application requires a minimum of 12 analog inputs.

You don't want a chip like the PCF8575 for analog: it's for digital I/O.

For analog inputs, you want a board like this: http://www.nkcelectronics.com/analogdigital-mux-breakout.html, or a piar of CD4051 or CD4052 chips.

If you do a search for "multiplexer" at www.arduino.cc, you'll find info about how to use them.

Ran

Ok thanks. I ordered some 4051 multiplexers from Digikey, we’ll see how this goes.

If you need more that eight analog inputs on a multiplexer, there's the HEF4067B:

http://www.standardics.nxp.com/products/hef/datasheet/hef4067b.pdf

It's a 16-input analog multiplexer. You may find other suppliers who list the chip by the base number 4067 (HEF is a Philips/NXP prefix).

Thanks

I ordered a few of of those as well in the purchase as backup.