using brain waves to activte servo motors

Discussion in 'Intelligence & Machines' started by Kristo, Jun 12, 2012.

  1. Kristo Registered Senior Member

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    hi i'm interested in operating an animatronic creation using my own brainwaves and was interested if anyone can give me the name of the sensor eeg hairnet i might use to create an interface in a computer, that would then interface with a servo control program and move the servos. i've seen footage of people using some similar technology to play drums on youtube. any advice would be great
     
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  3. Buddha12 Valued Senior Member

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    Wouldn't it be easier to incorporate your own electrical generation to help power your device?

    Brain implants, often referred to as neural implants, are technological devices that connect directly to a biological subject's brain - usually placed on the surface of the brain, or attached to the brain's cortex. A common purpose of modern brain implants and the focus of much current research is establishing a biomedical prosthesis circumventing areas in the brain that have become dysfunctional after a stroke or other head injuries. This includes sensory substitution, e.g., in vision. Other brain implants are used in animal experiments simply to record brain activity for scientific reasons. Some brain implants involve creating interfaces between neural systems and computer chips. This work is part of a wider research field called brain-computer interfaces. (Brain-computer interface research also includes technology such as EEG arrays that allow interface between mind and machine but do not require direct implantation of a device.)

    http://www.google.com/url?sa=t&rct=...88nkAw&usg=AFQjCNHBwP5d5YbK4G-RyQ6mjHxCiQHRfA
     
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  5. Stryder Keeper of "good" ideas. Valued Senior Member

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    I'm not a fond one of advertising (after all it's kind of the job of a moderator to delete advertisement spam), however I would suggest perhaps one commercial version currently www.neurosky.com I've had no personal experience with their equipment but you'll likely find some youtube clips out there of some of the things done in action.
     
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  7. domesticated om Interplanetary homesteader Valued Senior Member

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    Actually, I do know of one particular product that's right up your alley.

    the Emotiv headset does exactly what you're talking about;
    http://emotiv.com/

    It detects various brainwave signals, and has an API that allows you to interface with it using software that you've written yourself.

    So ....you could conceivably use some brainwaves to control a servo (or servos).

    here's a video from a TV show from some guys that pulled it off
    http://www.youtube.com/watch?v=3KR68SJ3ieA




    The only problem with it is you can't really control he servo like you'd *want* to control it. Brainwaves are typically only indicative of electrical activity in a region of the brain, so you can't really think "left" and the servo tuns left (for example), The only thing you can do is maybe latch on to nonspecific electrical signals that you can generate predictably.

    So yeah.... one basic setup I could think of off the top of my head would be this headset, a laptop computer, an Arduino, and a servo. You'd write some application that takes however the eeg info is being expressed .......I imagine an array[] of values with each index representing a sensor pad and the int/float/whatev being brainwave expressed in hz (or maybe I need not guess and RTFM) . you could then use that value to conditionally serial.write your 'move servo' command to the Arduino.
     
  8. domesticated om Interplanetary homesteader Valued Senior Member

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    Oh wow. i like their site. Takes you right to the code samples pretty easily too. Even has some .net source code available

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    http://developer.neurosky.com/
     
  9. Kristo Registered Senior Member

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    i cant tell you all how much i appreciate the neurological feedback via this internet prosthesis!
    in my heart i'm a bit iffy about the technology's smooth working. i agree Buddha12 that direct brain impants would make it more accurate but that's unfortunately a frankenstein fantasy for me unless i could get some awesome grant and collaborate with epic neurophysics graduates. many thanks to Stryder and domesticated om for the more feasible suggestions about technology that i need to really take a look at with an open and hopefully not in the near distant future eeged mind
     
  10. Hertz Hz Registered Senior Member

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    60
    Hey Kristo. What about a device that never ends, such as magnets etc.
     
  11. domesticated om Interplanetary homesteader Valued Senior Member

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