There is such a sensor from DK1 (the display is dead, the helmet is scattered into details). 
Judging by the fact that DK1 is a version for developers, as well as by the fact that there are Test Points on the board, I assume that you can somehow connect to it and get data from the accelerometer and gyroscope.
I tried to cling to 4 points, which are above the test points in the picture. I connected 3v power from the Arduin, and the TX from the gyroscope connected to the Arduin Mega RX3.
Well, I redirected the data from Serial3 to Serial to see what was flying there. And the zeros fly. is always. Everywhere.
Question: What did I do wrong? If you know links to at least some datasheet to this scarf - I would be grateful. I could not find myself (