hi @inmoov, yeah thats a normal message. Eventually your hard drive will run out of space because it will be full of ros logs, but for the moment you can ignore it I guess.
The fiducial size shouldn’t matter too much, but if you do slam you should either print them out the correct size, or do what I did and change the settings in the launch files (although there are lots of places its hard-coded in as 14cm).
I’m not too sure about the camera calibration, I haven’t calibrated my camera yet and things are working ok, @rohbotics, should we go through the effort? My understanding is that the calibration will reduce abberations in the lens of the camera… I guess now that I think about it I probably should do it…
@inmoov anyway, did you try giving the magni more space and slowly walking towards it from far away with the fiducial?