In this project, a little modification to a MIDI box's DOUT module is presented, which allows to drive LEDs built into spectacles.
Here is a little demonstration: http://www.youtube.com/watch?v=odRrXJm-RGQ
Here is a detailled project description: mindmachine_diy-beschreibung.pdf
If you have questions please send an Email to We_R_1 _at_ web.de (Kurt).