https://www.vice.com/en_us/article/88x99k/this-affordable-device-will-let-anyone-connect-their-brain-to-a-computer

Ildar Rakhmatulin is no stranger to using affordable Raspberry Pi devices for innovative projects. The researcher at Imperial College London has utilized the device to create a laser capable of neutralizing mosquitoes. But this time around, he’s co-opted the single-board computer to create a gadget capable of neuroscience. 

On Wednesday, Rakhmatulin—who is a research associate at Imperial College in the U.K.—launched a crowdfunding campaign for PiEEG. It's a special add-on for Raspberry Pis, called a shield, that allows the user to convert a single-board computer to a brain-computer interface.