This was a natural and predictable evolution. Our Raspberry Lagartos needed a compact panStamp shield directly connected to the RPi UIART... and this is the result.
This is a special low-profile shield relying on the attached panStamp for all the RF communications. The product page shows how to configure Raspbian and lagarto to use the UART for the serial communications with the panStamp. Our shield also includes a real time clock (DS1338) with battery backup so that the Raspberry is also able to get the correct time even in the absence of a network connection.