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Hey! I've got a GY-86 with MPU6050, a Barometer and the HMC5883L. On the Arduino (UNO) I get the MPU to work. But I can't figure out how to get the magnetometer data! I2C scanner tells me: Scanning... I2C device found at address 0x68 ! I2C device found at address 0x77 ! done and 0x68 is definately the mpu6050. And since I know, that it can be a master again, I suspect, that the other would be barometer and the HMC is on the slave of the MPU. Am I right with that? Can anybody tell me how I can proceed? Check my assumption or just get the mag data? Any help much appreciated!!