jxx_315 questions

[jtragtenberg]

jxx_315 has sent me an email asking these things:

hi, my friend:
I am an electronics enthusiast, recently in the understanding of motion capture projects. A few days ago I saw your message in MOTIONER project. I would like to know what is wrong wtih the code, can you give me the correct code? thanks.
I have several questions:

1. "How did you get position?" This seems to be a serious problem, you have any good way to get position?
   2: The Controller code is old version, do you have new version?

[jtragtenberg]

Hey jxx_315, I'll answer you here:

1: to get a position from an inertial motion capture you have to work hard (; The IMU sensors only give you orientation values, that is, angles! With this angles and estimating the size of each body limb you can organize many vectors and estimate the position in relation to the persons body center. To get an estimation of the position of someone walking you have to fix the lower part of the body... complicated huh? I heard there is also an algorithm to help predicting displacement in jump, but I haven't got a clue how that is done...

2: The controller code is in mbed, do you have it? They didn't put it the source on github, its only in the mbed platform. The link to it is: https://developer.mbed.org/users/FalconOnishi/code/MotionerController/

What have you managed to do so far?