PySense Expansion Board
Is there any more information available other than the spec sheet - there isn't much there regarding the pins that are used or the interfaces.
I'm writing up the documentation for both the Pysense and the Pytrack as I'm typing this now! It will go up once the device arrives!
I can however confirm that all the sensors are connected on the I2C bus via pins P22 (SDA) and P21 (SCL).
Hope this helps!