Mounts in the video game Final Fantasy XIV act like how cars or horses do in our world since they allow players to travel around the map much faster than would otherwise be possible. But even better, mounts are ways to express personality and have some fun, which is especially evident with the infamous “Fatter Cat” mount, as it got so widely beloved that Square Enix, the game’s publisher, decided to start selling a plushie version of it in their store. 

With his own Fatter Cat cushion, FFXIV modder Louis Hamilton (SuperLouis64 on YouTube) decided to add some extra functionality by attaching both a touch sensor and a passive infrared module that lets it sense when someone has sat on it. This in turn causes an Arduino Micro board to send out a keystroke that activates a macro in the game, thus causing the Fatter Cat mount to appear. 

You can watch SuperLouis64’s video below for a short demonstration of how this fun system works.