Optical markers (LEDs) are tracked with a camera to determine the angle of the platform.

It shows that the platform reacts very sensitive to high power loads in the house. When the TV is on, it gets noisy. When people take shower in the morning hours (electric heating here), the angle lowers significantly. Where the jump in the pic below comes from - I don´t know, maybe a neighbor toggled some power load.

For the preliminary test, I took the data from the flat areas of the graph - in this case in the sections before and after the jump.

The cavity has been turned on and off alternately. For the preliminary tests, two ON and two OFF phases were recorded with cavity in CW and CCW direction. Green graphs show cavity OFF, red graphs show cavity ON. Due to the jump (see above), the second pair of values is raised.

Cavity attached to push CCW:



When the cavity is on, the angle drops below the off-level.

Second test with cavity meant to push CW:

The angle rises above the off-level.

This looks plausible so far. Anyway this is neither a proof nor a real valuable data.

Another think I noticed is the poor resolution in determining the angle.



It´s because the marker detection algorithm works only on pixel accuracy. I will improve it to calculate the marker position on subpixel accuracy.

Although I am happy to see these results, it might be just a coincidence that they look good. I´ll need to perform long duration tests to be sure.