Modular LED wall panels often allow an easy, seamless front and back replacement of the tiles though specific magnetic devices [source of the gif: buff.ly/2z3qvzW] [more: vimeo.com/311975143]
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How does the panel stay in when putting it back? I don’t imagine the handheld tool is an electromagnet that can be turned off.
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The electronics look complex for a piece of a screen. Also I wonder how can you tell where the square starts and ends? The person knew exactly where the middle of it is.
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hey! I work on screens like these!
they don't all use cool magnets to detach them though, usually they're just like giant Lego blocks that you click together, hahah
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