So for those of you interested in binaural beats and light machines, here's a WAY cheap project (cost me nothing for the first one, i had everything lying around... second one was a whooping 6$):

What you need:

- 8 small LEDs (pick your colour, red is good because it's easy on the eyes and doesn't dilate the pupils, that's why they use red flashlights in astronomy or red light in photo studios)
- A printer cable (LPT. though i built my first pair with a male printer port and random wires i had lying around).
- A pair of glasses (plastic, comfortable)
- Computer (assuming you post on this board you have one. Even my computer was free, i got this 486 laptop out of a trash can, it runs DOS and WIN 3.11... though i do have a better computer )
- Basic soldering skills + tools, skrewdriver + drill bits.

here's how you do it and the operating software:

http://www.hackcanada.com/homegrown/wetware/brainwave/

and here's how mine came out:





i realize they're ugly as hell (second pair looks nicer, it has a clean printer cable and nicer cheap glasses)

so far i only used it with sleep induction, basically just seeing how fast it can put me to sleep at night (15 min or less guaranteed)... i have yet to go in the high frequencies and try experimenting with lucid dreaming.

it's way easy to build and certainly worth the effort (plus it's not 150$!!!)

downside to it: you have a wire hanging from your face if you go to sleep with it, but it's still a perfectly good light machine.