Published on Nov 22, 2010

Towards a Low Cost Brain Computer Interface – Control Devices with Your Mind!

The title of this project describes what is it. Yet if you couldn’t quite get it, then have a look at this article in wikipedia to know what Brain Computer Interface is all about. Our Goal of this project was to build a lower cost solution to implement this exciting technology through which you can type words by mind or control the computer and other devices through your mental commands. Sounds unbelievable? Let me introduce you with the basics of this technology so you can understand that it’s not impossible.



We all know that When our brain process any information then neurons in different parts of our brain interacts with each other. When neurons interact with each other then they pass the brain information through electric signals. Between two consecutive neurons there exists a very small gap and there the neuron axon transmits the electric signal to the dendrites by means of electro-magnetic radiation. In this phase of transmission of brain signals between neurons, some part of the electromagnetic waves propagates outside and we can detect those electromagnetic waves from outside of our brain skull. Then by processing those signals we try to understand what was the command sent through the brain waves. Similar commands have similar patterns in their brain waves and our computers these days are smart enough to classify them :)

Interesting… isn’t it? Well then lets see how this technology can be implemented without much of costing for the parts. The whole details of the project with the complete step by step instructions, circuit diagrams, binaries and the presentation can be downloaded from the following links. To download to your computer right click the links and then click save target as/save link as etc depending on your browser.

Download BCI Report PDF

Download BCI Presentation PDF

Download the EEG CKT File

Download BCI Program Binaries

3 Comments + Add Comment

  • Foster Ethan7

    May 7, 2011 at 11:40 am

    So if this device can produce the same brain waves that your brain
    receives than why doesn’t your tweck the waves to use sirtent commands

    like: To use the full percent of your brain. Hey I’m only 17 year old
    but yet I’ve all ready created half of the machine but the rest of the
    supples i need cost thousands of dollars. And that when i for that
    device uses the exact same supples as mine. You could the World.

    brain waves technology

    • Masum

      May 7, 2011 at 3:17 pm


      My presentation document also talks about this idea. These things are really interesting. Research is going on to create devices to control the brain activity using artificially generated waves and applying specially controlled magnetic fields on the brain cells. Nice to know that you are interested in this research field that I think is mostly unexplored up to this far.


  • Matty

    May 25, 2012 at 5:08 am

    At synapses Ca ions flood in to the membrane to stimulate vesicles containing transmitter substance (eg acetylcholine) to move toward the presynaptic membrane and fuse with the membrane and release this substance which diffuse down the gradient to the postsynaptic membrane (across the synaptic cleft) which then causes an allosteric effect (change of shape) on their respective receptors. This allows the Na ions to move in-depolarizes the membrane and stimulate another action potential.(a wave of depolarization due to the flood in of Na). Also the myelin sheath (look it up) prevent any ‘leakage’ (in layman’s terms) of Na. But i read somewhere that the body protects it self from cell radiation from disintegration of K (helps maintain the resting potential at -70V so that the membrane can be depolarized for an action potential to be stimulated). K could have more than one function…who knows, but i learnt all this from books by leading scientists and researchers. I <3 weed

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