$7 - GY-87 10DOF includes accelerometer, compass, air pressure, temperature

gyro and accelerometer MPU6050 3 axis
digital compass hmc5883l 3 axis
pressure and temperature bmp085 1 axis
interface - i2c bus

Code I tested for proof of concept https://github.com/richardghirst/PiBits/tree/master/MPU6050-Pi-Demo

Purchase Source

http://www.aliexpress.com/item/GY-87-10DOF-Module-MPU6050-HMC5883L-BMP180-GY87-Sensor-Module/1986963611.html?spm=2114.01010208.3.2.mqhaup&ws_ab_test=searchweb201556_0,searchweb201602_1_10036_10035_301_10034_507_10032_10020_2010016_10017_10005_10006_10021_10022_401_10018_10019,searchweb201603_9&btsid=6cc51804-d95d-4fd9-8265-85f72fdd3bcf