In our opinion, the only thing the Raspberry Pi 3 and Pi 2 are truly lacking is an I2C port. (Of course you may have guessed by looking at our product offerings, we are admittedly a little biased. No worries.) The XPI is a non-invasive I2C adapter complete with level shifter providing you with a 5V I2C port for use with ANY of our I2C devices. The I2C port points outward toward the outside edge of the board, and terminates directly above the HDMI port. The XPI does not consume the 40-pin expansion port, as it is equipped with a pass-through connector, freeing the 40-pin connector for other purposes, making it a truly non-invasive design.
Add communications to your Raspberry Pi 2 & 3, greatly expanding communication options. Expand your Raspberry Pi to include industrial wireless options from Digi.com, such as ZigBee, 802.15.4, or our favorite Industrial wireless: S3B. The XPI is also compatible with other communication modules, such as USB, RS-232, Bluetooth, WiFi, and Ethernet. The XPI overlay shield allows connection to a wide variety of communication modules to your Raspberry Pi 2 & 3.
NOTE: The XPI adapter provides a power solution as well as TX and RX data connections to the Raspberry Pi 2 & 3. No other communications pins are mapped to the Raspberry Pi 2 & 3.
XBee® is a registered trademark of Digi International. www.digi.com