Sparkfun Electronics Analog/Digital MUX Breakout Board

The SFE Analog/Digital MUX Breakout Board is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. The chip can be used to connect 16 analog sources (like sensors) to 5 pins on a microcontroller. 4 of the pins must be digital pins and 1 pin must be an analog to digital conversion pin. This allows 16 sensors to operate on only 5 pins of a micro. This is a great way to connect a lot of sensors to a few pins.