Expand your robot’s ability to interact with the world with the MUX Shield II by Mayhew Labs.
The shield, which will work with an Arduino or Arduino Mega, adds capacity for 48 inputs or outputs. To get the job done, the board uses three Texas Instruments CD74HC4067 Analog Multiplexers. It’s a nice step up from the original MUX Shield, because all of the I/O pins are at the end of the board so you can connect them neatly using a ribbon wire. But note that this stackable shield does not include headers, so you’ll want to make sure you have some on hand.
You can buy the shield on the official Arduino Website for €19.90.