SMAKN&reg; GY-87 10DOF Gyro Accelerometer Compass Barometric Sensor GY87 HMC5883L MPU6050 BMP180 10 DOF Module (3 axis gyroscope + 3 accelerometer + 3 axis magnetic field+air pressure). Technology:Immersion Gold PCB. Chip: MPU6050+HMC5883L+BMP180. Power Supply :3-5V. Communication: IIC communication protocol (fully compatible with the 3-5V System,circuit LLC is contained ).