Introduction: Mind Reader Kit

This is a project that uses your brain to control stuff, analyse moods and a modification can be used as a lie detector. I even managed to control a simple pc game.
This serves as a basic medical analysis of brain waves . The brain being the master control of the whole body . So why not develop a project in which it can be used to control various electronic stuff.
This way of looking into the brain is called EEG . 

Step 1: PARTS

    PARTS

1)CHIPS

- 1x Instrumentation Amplifier - AD620AN - This is the most expensive, and most important part. While technically you can make your own instrumentation amplifier from 3 op-amps, I could never get my own to give me good results. Precision cut resistors in this ensure that it'll do its job.
- 2x Quad Op-Amp - TL084CN - Any Op-Amp will do. You need 5 single amps, this one just includes 4 in each chip.

2)CAPACITORS

- 1x 10 nF, ceramic
- 1x 20 nF, ceramic
- 1x 100nF, tantalum
- 5x 220nF, tantalum
- 1x 1uF, electrolytic
- 2x 10uF, electrolytic

3)RESISTORS
- 1x 1kΩ Potentiometer - via Digikey - very useful to adjust your gain on the fly.
- 2x 12Ω
- 1x 220Ω
- 1x 560Ω
- 2x 22kΩ
- 1x 47kΩ
- 2x 100kΩ
- 2x 180kΩ
- 1x 220kΩ
- 2x 270kΩ
- 1x 1MΩ

4)CONNECTORS

- 3.5mm audio cable.
- 2x 9V batteries for power.



Step 2: Processing

CAUTION: I highly suggest doing this on a laptop, because there is a danger involved if there's a spike in voltage from the wall outlet. Regardless, BE VERY CAREFUL WITH THE PROBES GOING TO THE SOUND CARD. If they accidentally touch a high voltage source (i.e. you stick them into a power outlet), you can fry your computer's sound card.

First thing to do is to download Processing, available at http://processing.org. It doesn't require any installation; just unzip the download, open the folder, and run it. Download the sketch (what programs are called in processing), and open it up. The program should be good to go as is, and while there should be enough documentation to understand what's going on in the sketch, 

The code http://rapidshare.com/files/4025495621/READ_EEG_cleaner.pde


Step 3: Processing

For electrodes you can use any metal washer or just some coins with some tape . I recomend you to use some cream for better contact.

CAUTION: I highly suggest doing this on a laptop, because there is a danger involved if there's a spike in voltage from the wall outlet. Regardless, BE VERY CAREFUL WITH THE PROBES GOING TO THE SOUND CARD. If they accidentally touch a high voltage source (i.e. you stick them into a power outlet), you can fry your computer's sound card.

First thing to do is to download Processing, available at http://processing.org. It doesn't require any installation; just unzip the download, open the folder, and run it. Download the sketch (what programs are called in processing), and open it up. The program should be good to go as is, and while there should be enough documentation to understand what's going on in the sketch, 

The code http://rapidshare.com/files/4025495621/READ_EEG_cleaner.pde


Step 4: Processing

CAUTION: I highly suggest doing this on a laptop, because there is a danger involved if there's a spike in voltage from the wall outlet. Regardless, BE VERY CAREFUL WITH THE PROBES GOING TO THE SOUND CARD. If they accidentally touch a high voltage source (i.e. you stick them into a power outlet), you can fry your computer's sound card.

First thing to do is to download Processing, available at http://processing.org. It doesn't require any installation; just unzip the download, open the folder, and run it. Download the sketch (what programs are called in processing), and open it up. The program should be good to go as is, and while there should be enough documentation to understand what's going on in the sketch, 

The code http://rapidshare.com/files/4025495621/READ_EEG_cleaner.pde


Step 5: Game Time

I also decided to make a quick demo game of something more fun you can do with the EEG circuit. You can read most of this in the attached processing code, but the general concept is a simple pong game where you control the paddles with your concentration of alpha waves. The easiest way to manage the controls is to close your eyes and relax to make the paddle move up, and to open your eyes and focus to make it move down. The electrode setup is the same as the previous code slice - GND behind left ear, and active electrodes on the right frontal and occipital lobes

Try to develop your own processing code to get various other stuff.

For code http://rapidshare.com/files/2686115236/TWO_PLAYER_PONG.pde

For further information comment


Comments

author
sanjaykd made it! (author)2014-04-25

download links are not working. please provide some other links.. its urgent plz...

author
diginess made it! (author)2014-01-04

The schematic is too blurry / low resolution to read properly.

author
thor.stormlord made it! (author)2013-11-03

this sounds very interesting can you please elaborate on the basis of its function?

author
iloveandroid made it! (author)2013-05-30

Thanks

author
prabhatscientist made it! (author)prabhatscientist2013-10-29

can u explain how this circuit works?

author
ilya128 made it! (author)2013-08-30

must try it out

author
polkijain made it! (author)2013-07-17

well does this work? if it does then I would probably like to see it in action if you could. also please upload a better blueprint( circuit diagram )

author
brenna1123435 made it! (author)2013-07-08

This is awesome. I always wanted to read my pet rabbits brain.

author
iloveandroid made it! (author)2013-05-30

Thanks

author
cupcake lover made it! (author)2013-05-30

Cool

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Bio: I'm a high school student like to build stuff, I have a lot to study at school so that's whys you may get ... More »
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