I used this tutorial How to Hack Toy EEGs | Frontier Nerds for converting a MindFlex game into an EEG, I got the who way to the part where you need Processing but now I am stuck. I guess the tutorial is old, I downloaded an old version of Processing (1.5.1) and an old version of ControlP5. I started up Processing and opened Brain_Grapher (folder Processing-Brain-Grapher-master). When I use Present I get the error Cannot find a class or type named "ControlFont" What am I doing wrong?
this should be on the processing forum, since it's more of a processing problem than arduino. However, I have successfully done this hack with processing 2.0b6. try downloading controlP5 again and delete old version, you might have some legacy items in there.