The Interface Board makes it easy to connect and communicate with your favorite devices with up to 35 general input/outputs, 2 serial ports, TWI, CAN, SPI along with Ethernet and USB. All pins are 0.1" spaced for easy insertion into your prototyping breadboard.

The Interface Board is compatible with your existing Make Controller Board - simply unplug it from the Application Board and insert it into the Interface Board. Because you're still using the same Make Controller Board, you can use the same great open source software tools: mcbuilder, a simple development environment that contains everything needed to write programs for the Make Controller, and mchelper, a configuration program that makes it easy to configure your Make Controller once it's running.

Note that this is just the PCB for the interface board, and requires assembly. You can find a shopping list and assembly instructions in the Interface Board tutorial. Soon you'll also be able to purchase the Interface Board pre-assembled as well.