This puzzle is so simple and allows for so many variations, that most of the time, we don't need to use any controller. In this first post, I want to present some possibilities of the simplest of all devices, which is the closed circuit.
Others are combination games, in which the player needs to place objects in certain positions for the puzzle to unlock the next stage. Others, which I usually call closed circuit, are those where the player needs to trigger all sensors to unlock the puzzle. For example, there are puzzles that are sequential, that is, the player needs to activate a certain number of sensors in a specific order for the puzzle to unlock. There are countless puzzles for Escape Room, but I've grouped many of them into sets that make it a lot easier for me when it comes to developing solutions. Many of them I created myself, others I adapted from things I found in my searches on Instructables, Github, Hackster.io and many other sites. At this point, I already have a considerable repertoire of solutions. I've been developing puzzles and artifacts for Escape Room since 2018 and most of the time, I've been using some kind of Arduino as a controller.