Myself and my Fiancé are creating a varient of the Mitch altman's brain machine, There is a lot of information online about his project as he made it open source and a lot of people have added to it to improve the programming and overall effects etc so this should be a fairly straightforward project.
The basics of what we require are a battery operated set of LED's with audio output with volume control and two switchable settings to select between different brainwave sessions (flashing LED's set to specific frequencies) .
I have included a pdf of how to create Mitch's version but we are looking to streamline the electronics by using a custom board or other options depending on what you think is best as we are wanting to make our version much more attractive lighter and smaller.
Ideally we would like to work with someone who has interest in meditation/tripping as this is what the effect of the final product will be but its not essential.
Matt and Vick