We usually only close our garage door about 90%. We leave it slightly opened for the cat to come and go. It would be awesome for the controller to be able to issue an open control and then issue another control shortly thereafter to stop the opening motion. That could be done with either a user defined time delay or by tracking the relative position of the QR code
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With something as precise as the QR code you could have all kinds of preset positions. Just enough for the bikes, just enough for car A vs. truck B, lawnmower height, sunshading, etc.