I wanted to create reproducible “scary” effects powered by the Raspberry Pi. Being a big haunted house fan, I wanted to mimic some of the classic gimmicks. This one, being the “thing” crashing behind a door or wall. As many probably know, this effect can get repetitive, even with a live person. So, I wanted to create a system that would cycle through different sequences for the surprise factor. Since a wall is not exactly frightening, I added a window to simulate that of a front door. The window gives the viewer the sensation that whatever it is, it is right behind a thin storm door.
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