Yet another Yaw / magnetometer calibration issue

[arilotter]

Hello! I've followed your https://github.com/kriswiner/MPU6050/wiki/Simple-and-Effective-Magnetometer-Calibration guide, but it results in a hard iron bias of {0, 0, 0}. I can see the magnetometer output, and the soft iron bias is a non-zero number, but the Yaw axis is still totally wrong (almost sinusoidal). The code's running at ~140MHz on an adafruit feather 32u4

[kriswiner]

offset bias of 0, 0, 0 is highly unlikely. Looks like you have an error in implementation.

On Tue, Aug 15, 2017 at 1:21 PM, Ari Lotter notifications@github.com wrote:

Hello! I've followed your https://github.com/kriswiner/ MPU6050/wiki/Simple-and-Effective-Magnetometer-Calibration guide, but it results in a hard iron bias of {0, 0, 0}. I can see the magnetometer output, and the soft iron bias is a non-zero number, but the Yaw axis is still totally wrong (almost sinusoidal). The code's running at ~140MHz on an adafruit feather 32u4

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[henzim]

From where did you call magcalMPU9250() ? I had the same problem when I called the function from the setup(), without waiting for
if (readByte(MPU9250_ADDRESS, INT_STATUS) & 0x01) { // On interrupt, check if data ready interrupt try calling it later in the loop()