Plex64

A library for the Plex64 analog input multiplexer shield. Supports multiplexing up to 64 inputs into 4 analog pins using 4x CD4067B analog multiplexers/MUXes. Configurable 1:1/2:1/4:1/8:1 voltage dividers and OP amp buffering allow high impedance input up to 18V with low settling time. I2C IO expander minimizes pin requirement footprint and 8 possible addresses allow multiplexing up to 512 analog inputs per I2C bus.