Skip to main content


Welcome all Hardware Developers! Are you interested in how an OpenBCI board is made? Do you want to make one yourself or incorporate one into a project? This is the place for you! Here you will find resources, including full schematics, for current and past hardware.

All information provided here is licensed under the MIT License!

OpenBCI Hardware


Cyton Dongle (RFDuino)


OpenBCI Headwear

Ultracortex Mark IV (June 2016 - Present)

Ultracortex Mark III (June 2016)

Third-Party Hardware

WiFi Shield

OpenBCI Forum