How to hack a toy EEG.

A quick tutorial on how to extract serial data from the $80 Mattel Mindflex ( The hack also works with the Star Wars Force Trainer.

More information and detailed instructions are available here:

I wrote an Arduino library to encapsulate the software-side of the hack into just a few lines of code:

And here's a Processing-based brainwave visualizer:

This hack was originally developed for Mental Block (, a project I worked on with Arturo Vidich and Sofy Yuditskaya.

(Also, a safety note: You do not want wall power anywhere near this circuit. Only plug the Arduino + Mind Flex combination into a laptop running on batteries alone.)

Science music by Freescha.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…