The CD74HC4067 16-Channel Analog/Digital Multiplexer Breakout Board is a compact input/output expansion module compatible with Arduino, ESP32, and Raspberry Pi. It functions like a digitally controlled rotary switch, allowing you to connect up to 16 individual signals (C0–C15) to a single microcontroller pin (SIG) using only 4 selection lines (S0–S3). Because it is fully bidirectional, it works seamlessly for both reading analog/digital sensors and controlling output components like LEDs or relays across a standard 2V to 6V operating range.
Would you like:
An Arduino wiring schematic and code example?An explanation of how to connect multiple boards together?
