Arduino Team —

Whether one of your senses is weak or non-existent, or you would simply like a way to augment your perception and control options, the Cthulhu Shield can be applied in either situation.

The device takes the form of an Arduino Uno or Mega shield, with a strange flexible electrode setup that is placed directly on the user’s tongue.

When these electrodes are fired, they activate nerve fibers on the tongue, producing a feeling like that of carbonated bubbles popping. This can then be used to convey information to the user, whether this is visual, sound, or even Internet updates or other non-traditional stimuli. Importantly, it can also be utilized as an interface for tongue computer control.

The Cthulhu Shield lets anyone experiment and make devices that can expand your sensory experience! We’ve made android apps and example programs that will let you use the Cthulhu Shield and your smartphone to ‘see’ and ‘hear’ with your tongue without needing to write a single line of code! For those of you interested in making your own projects, we’ve written an easy to use Arduino library and provided example code to get you started on projects including tongue-heat-vision, tongue-based GPS directions, and soon, tongue-ultrasonic hearing. But don’t limit yourselves to the examples we’ve provided, the only limit to what you can make is your imagination! Finally, we designed the Cthulhu to be used as a tongue based computer interface (because if you already have something in your mouth, why not use it to control your computer)? Write your own code to hotkey video game actions, send text messages, or control a wheelchair or mobility device with your tongue.



If you’d like to get your hands on one, the Cthulhu Shield is now being funded on Kickstarter, while code and board schematic are available on GitHub.

