i have been tasked with doing this tomorrow.. how exactly do you hang the chains to the sheetrock ceiling? im presuming you just used a stud for each of the 1 1/2 inch cup hooks? i presume using a sheetrock anchor would not be a good idea in the ceiling.. cant really see from your video
Good but forgot to show how the texture of the wall can affect the results. Nor did you show that you have calibrate and recalibrate every time it loses contact with the wall.