Hi, I have just finished my project on hackaday : Solar Tracker
I publish all the code including the B4A App to allow an auto calibration of the Solar Tracker : (V3 version) here on my github
This App works quite well although I do have some "freezing and overlapping text" when the App resumes. I don't know why... Never got such a problem with my other apps !
It occurs even with no Solar Tracker connected... simply resume the App
Finally the video for the HackadayPrize last round : the Final !
Please don't hesitate to follow and subscribe on the Hackaday's project page