Orientation data. where does it come from?


by ztjona

Orientation data. where does it come from?

Hi, all

I am working on moving a robotic arm with the orientation data. It works fine, but I need to write a report about it. The problem is that the orientation data is not raw data from a sensor, right?.
I think it is a mixed between magnetometer data and some other stuff. So, I would like to know more about it, until now, I couldn't find information.
What is the math, or algorithm used in the Myo armband to obtain the orientation data??

Thanks.
by marktoma

Orientation data. where does it come from?

IIRC it's an MPU9150 from InvenSense. Google should help you find datasheets and other product info. Accel and gyro in silicon plug magnetometer all integrated with DSP running some fusion algorithm to estimate the quaternion. Spits out digital representation of raw and filtered accel/gyro and estimated quaternion.
Moderator control