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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
Food Living Outside Play Technology Workshop
open brain wave interface hardwareby mkahata on September 14,
2012
Table of Contents
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Intro: Open brain wave interface hardware . . . . . . . . . . .
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Step 1: Prototype . . . . . . . . . . . . . . . . . . . . . . .
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Step 2: Prototype 1 . . . . . . . . . . . . . . . . . . . . . .
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Step 3: Prototype 2 . . . . . . . . . . . . . . . . . . . . . .
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Step 4: Prototype 3 . . . . . . . . . . . . . . . . . . . . . .
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Step 5: Code . . . . . . . . . . . . . . . . . . . . . . . . . .
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Step 6: Open brain wave interface hardware circuit diagram . . .
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Step 7: Other Arduino connection . . . . . . . . . . . . . . . .
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Step 8: BrainVJ sample . . . . . . . . . . . . . . . . . . . . .
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Related Instructables . . . . . . . . . . . . . . . . . . . . .
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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
Author:mkahata psychiclabprogrammer, electric engineer, brain
wave interactive artist. Begging of 1970 making custom made Audio
system, PA system, Mixing console, Bio-feedbacksystem with LED,
etc. 1983, Brain wave visualization and control mouse use LISA
computer. 1991 start ship IBVA : Interactive Brain wave Visual
Analyzersystem for Mac. Use Max to connect brain wave to MIDI that
time. since 2005 use Quartz Composer for brain wave MIDI and visual
control. 2009 Jan, startship BrainDJVJ application for iPhone.
Currently working on brain wave interactive OpenCL 3D stereoscopic
object in the HDRI 360 degree panorama lightprobe image
environment., Arduino controller and multi device input based on
UDP/OSC.
Intro: Open brain wave interface hardwaremake high quality brain
wave interface as low cost and small size is my over 20 years of
dream. To do so need mass production, need work with investor to
realize thatway. not just only my thinking many people ask me to
have low cost brain wave interface but i didn't succeeded many
years. Still i sale expensive brain wave interfacesystem.however
recently we can get parts, micro controller more low cost, small
size and more easy to do custom programing. So I made 3 different
prototype first. then makeactual low cost interface.Section 1 is
how i made prototype over 20 years ago and new prototype 1, 2 and
3. including Arduino code and test code.Section 2 is circuit
diagram for actual new design brain interface based on prototype 1,
2 and 3.Section 3 is small size brain interface on going
project.Section 4 is example of brain wave interactive
animation.
This brain wave interface hardware work with Mac:IBVA V5.0.8.5 :
not free. all IBVA user since 1991 can get this free upgrade.Quartz
Composer IBVA plugin : free
and PC user can use Brainbay with IBVA plugin for OpenEEG
project. : freefollowing is step by step instruction for this.
photo is prototype 1.
1: making of open brain wave interface hardware
prototype.prototype : Step 1prototype 1: Step 2prototype 2: Step
3prototype 3: Step 4code: Step 5
2: open brain wave interface hardware circuit diagram.diagram :
Step 6
3: other Arduino connection : Step 7
4: brainVJ sample : Step 8
Step 1: Prototypeprototype
you can skip to see this page and prototype 1, 2 and 3 to go
diagram also.
to make brain interface is not easy. to see brain wave need to
use less than 1 micro V (1/1,000,000 V) resolution amplifier, and
need to care for electrode and skinconnection to forehead. all
interface need to isolate from AC power supply.need to use low
noise amp. make that way is not easy to make low cost, unless make
mass production. however recent open hardware technology let us to
make lowcost by our self, it was my over 20 years of dream to make
low cost and high quality brain wave interface. like to share this
how i made open brain wave interface.first i made prototype that
use head amp i made over 20 years ago.i start develop brain wave
interface around 40 years ago with all analog electric device with
LED. LED technology was open around that time. it is like miracle :
silicondevice can make light, but brightness was so weak that time,
like 20 mA current makes 1 mcd, but I start make LED accessory,
everybody surprised it. new LED which Iused for prototype 2 is 20
mA current makes 25,000 mcd. many new technology happened like that
way, for beginning is so little but going to so big. some people
cansee this beginning of changes, but some people can not see this
changes. many times happened coverup of new technology too.it was
my personal interest to start develop bio feedback device that
included brain wave feedback.unfortunately not easy to see brain
wave at that time. so i was dreaming to have more nice way to see
it.
since mid 1970 start use digital technology with analog device
such as switched capacitance filter.
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then start micro compute age. i was so existing to use this CPU
technology with bio feedback system.Start use LISA and Mac computer
since 1983/1984, control mouse with brain wave, show brain wave on
the Window on screen. Did brain wave control MIDI since it
isstart.http://www.psychiclab.net/Public/1984.html
we are not just only bio entity. also connected hyper space,
mind-spirit world. so brain wave technology = brain microphone 's
information can not tell all of human mindof course. however can
see so interesting way to change brain wave that depend on our
state. My case some time i worked many days no sleep, i was so
surprised thatmy brain wave looks so many high beta frequency
active and can not make it down. it was nice for me to see it for
use personal brain excise. also sleep and dream brainwave is my
interest. i don't do but people doing meditation, tai chi, yoga
etc. also interesting way to change brain wave, to see coherence is
one of my interest.We can connect brain wave to multimedia, to
control, sound, MIDI, animation, LED light, DMX, connect via
internet, etc. can use as one of input device.beginning was so slow
to control many things limited by technology. this video shows how
to play MIDI with brain wave in 1993, play by Timothy
Leary.http://www.psychiclab.net/iWeb/Pod/Podcast/29E21D35-E5C5-4508-99AB-3826CEC02A4C.htmlOur
electric technology is still so primitive like before actually
technology born. we are waiting to use Memristor and TeraHertz CPU
technology. but now computer speedgetting better than before. so
many interesting things we can do now.my system get brain wave from
forehead, left and right, you can put electrode other location in
case you like.some people like to connect many electrode, but i
don't like to do that way. its take long time to put electrode and
not easy to continue always wear that way.also some people like put
electrode inside of brain : implant. currently I don't like that
way. some case people need to do like to do or not. this technology
maybe going tobig business like cell phone.so i forces to get brain
wave only from forehead, like brain wave stereo microphone. connect
many electrode mean like use many microphone to recording sound.
thatway we can get more information of course. but not easy to
setup that way always.forehead is most development part of human
brain, and shows personality. other part of brain use for more like
as human bio robot : same as other animal except Dolphinand cat. it
is just in generally say that way. not for all animal included
human. we are created by different beings/entity.
one of IBVA prototype photo: Interactive Brain wave Visual
Analyzer : 1988
active head AMP (Left) and AD converter and serial converter use
PAL programable logic IC.1989, I used one of IBVA prototype with
friend Bill Cote ( http://bcvideo.com ) we did brain wave
experience at Peru, MARKAWASHI, Machu Picchu, on airplane fling
overNazca Line, etc.
few brain wave experience that
time.http://www.psychiclab.net/IBVAex/BillMachuPicchu.htmlhttp://www.psychiclab.net/IBVAex/BillPeru2.htmlphoto
at Machu Picchu.
following images are actual product in 1991 witch use classic
radio wave. one unit has one channel brain wave and use transmitter
and receiver unit.Next product start ship from 2006 to currently
use Bluetooth. one unit has two channel brain wave + extra two
channel 0-5 V input.both brain wave interface has similar quality
of brain wave head amp which i start design since 1980's.so i used
two original IBVA's head amp parts from transmitter unit and
Arduino BT put together to make prototype open brain wave interface
unit.following is step by step instruction how I made it.all people
who has original IBVA can make same way in case they like to do
so.then next show re-design brain wave hardware circuit diagram
that based on original IBVA design and use Arduino. everybody can
use this diagram to make it.later show actual photo and all parts
list for this open hardware.most difference between Arduino open
brain wave interface and actual current IBVA Bluetooth product is
max sampling frequency.open brain wave interface Max sampling
frequency is 240 Hz, actual product is 1980 Hz. usually 240 Hz
sampling frequency is ok to do many things.but open brain wave
interface use Arduino, so easy to modify program to do many things
like LED feedback on unit, which actual product can not to do that
way.it is like dream for me, can put together old AMP unit and new
Arduino interface. and now we can use with high speed Mac/PC.
original IBVA start ship 1991 for Mac.1998, IBVA won a product
award at the MacWorld New
York.http://www.psychiclab.net/IBVA/PhotosPublic.htmlhttp://www.psychiclab.net/IBVA/PhotosMedia.html
current product use Bluetooth interface which start ship from
2006.http://www.psychiclab.net/IBVA/IBVA_.html
about Brain wave.there is many EEG related information.you can
find it from web. all information is depend on your interest
also.something like
:http://www.psych.westminster.edu/psybio/BN/Labs/Brainwaves.htm
however not many open information for special research
resolute.i'm interested in to see coherence. some of my experience
of coherence
data.http://www.psychiclab.net/IBVAex/CoherenceEX_2.htmlabout
coherence display in IBVA 5
application.http://www.psychiclab.net/IBVA/Coherence.html
coherence experience was started 1972..1976 by David
W.Orme-Johnson, Maharishi's Transcendental Meditation technique.
This Meditation was getting popular byBeatles. Maharishi Institute
Japan visiting my home in Manhattan New York beginning of 1990's
ask me to incorporate there coherence function to my IBVA
application.so I work together with brain wave research people in
Maharishi international university in Fairfield Iowa to develop
coherence function. early 1970's with there computertook one week
calculation time for coherence to print out paper. now with IBVA 5
application with current computer can see coherence in
realtime.1972 was also SRI ( Stanford Research Institute ) invited
URI Geller for six weeks of psychic testing by Laser physicists Dr.
Harold Puthoff and Russell Targ, CA USA.they tested psychic with
brain wave experiment.1968-1972 Andrew D. Basiago join DARPA's
Project Pegasus, time travel, teleportation experiment. one of
system they used was brain wave interface system
also.http://www.projectpegasus.net/1972 also first Crop Circle
found in modern history at Warminster UK by Bryce
Bond.http://www.cropcirclesecrets.org/crop_circles_early.htmlBrain
wave experience in the Crop Circle with friend Colin Andrews. :
1993 ..
2002http://www.psychiclab.net/IBVAex/BrainwaveCropCircle.html1972,
i was in Sapporo japan, organized one of first hippie outdoor
concert event in Japan that used stereo system I made as PA system.
i start develop brain wavemonitor device. actually not easy to see
brain wave that time. mid 1980 i start work as head of ASC II
Laboratory for human computer interface research included brainwave
biofeedback, UFO and Psychic phenomena research. it was first
company did research for this kind in Japan. few years later ASC II
need divided two for startMicrosoft japan develop world first
Windows computer. ASC II and NEC was large computer related company
in Japan that time. I was so surprised when I tested
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Windows Alpha version computer, programming structure was so
similar as Mac.http://psychiclab.net/IBVA/ASCIILAB.html1988
November with UFO study group friend in Sapporo Japan, we invited
Kiyota to do psychic spoon vending open experience. so i try to
make new IBVA prototypewithout sleep few days with new color Mac
II, it was first color Mac just released. I was so exciting to make
brain wave visualization application in color display only 256color
that time. however brain wave experience was not succeeded that
time. my system didnt work
correctly.http://psychiclab.net/IBVA/KiyotaPhoto.html
Following is how I made open brain wave interface prototype 1,2
and 3.
you can skip to see prototype 1, 2 and 3 to go diagram also.
Image Notes1. active head AMP : 1988
Image Notes1. at Machu Picchu
Image Notes1. IBVA 1991
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Step 2: Prototype 1prototype 1
Arduino BT + RBG LED feedback + pi & phi crop circle Laser
cutter body + cable and head pad electrode.
use original IBVA hardware's AMP parts.open this transmitter
unit.
Cut this parts from transmitter unit board.
use two of them put together on circuit board.
then put on it Arduino BT and Li-ion 3.7 V battery.in front put
SW and 6 pin connector to connect cable and head pad.in back put
battery and connector for charger.one charge runs 4 hour continue
operation time.
1: connect 5 V power to two of AMP parts DC-DC converter power
input. it is from Arduino 5 V output pin.2: connect AMP parts
output ( 0..5V output) to Arduino Analog input 0 and 1.3: connect
two RGB LED to Arduino Digital output pin, 3, 5, 6, 9, 10, 11.4:
connect battery via Switch to Arduino BT power input connector.5:
need to use changer for charge Battery. can not use this device
when change battery.6: connect cable and head pad to 6 PIN input.
need to make and/or buy this cable and head pad.
two RGB LED light ON by command from IBVA application BS switch
serial command.left and right brain for each LED,
delta/theta:Green, Alpha:Blue, Beta:Red brain wave trigger LED.one
LED is top, other LED is side.
originally use as Arduino analogue output pin, 3, 5, 6, 9, 10,
11 for drive LED. but to do so cannot use timer interrupt function.
so i change it to use as Digital output.and serial command for
control LED was use with IBVA application BS number command, but to
do so speed problem happened. so i change it to simple one
charactercommand.
Battery charger connector.
with charger. one charge operate 4 hour continue.
Cable and head pad. need to put 3 electrode to head pad. this
cable has ear clip for body ground. body ground use for reduce AC
power noise from outside.
this photo shows connect medical electrode connection. 3
electrode to forehead and/or other part of brain, one is for body
ground : like neck, etc.
you can design own head had, this head had for waveUFO project
design by Mariko Mori and me, 2001, 2002.waveUFO body is made in
Italy same as
Arduino.http://www.psychiclab.net/PsychicLub/wave_UFO_Rio_Brazil.html
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Step 3: Prototype 2prototype 2
Arduino nano + pi crop circle LED with distance sensor + active
head amp SoundBrain.pi = 3.141592654 crop circle happened June 1,
2008 in
England.http://www.psychiclab.net/IBVA/Communication.htmlLED has
each pi number in block from center part. so each block need to
drive different current power. over 39 mA drive connect N channel
FET : 2N7000 to output pin.Connect 200 ohm resistance to limit
current around 10 mA for all LED.Y X 3: 39 mA, R X 1: 9 mA, G X 4:
33mA, B X 1: 10mA, W X 5: 43 mA, R X 9: 80 mA, G X 2: 17 mA, B X 6:
58 mA, W X 5: 43 mA, Y X 4: 52 mA. Total : 442 mA in caseall ON.R
LED is actually full color LED. when start ON then Red. but keep
continue ON then change color to full color.Each block of LED light
ON by command from IBVA application BS switch serial
command.Distance sensor : 2Y0A21, one sensor for speed control,
other sensor for pattern control.
pi crop circle LED movie :
head set for brain wave microphone, SoundBrain
active head amp which i made 23 years ago.this head amp is older
than used for prototype 1.
inside of active head AMP
put head amp to folder.
hold electrode snap
connect electrode snap to head amp input.connect head amp output
to 4 pin connector. PIN 1: + power input. PIN 2: R channel output.
PIN 3: GND. PIN 4: L channel output.PIN 1: + power input connect
diode ( 0.2V drop diode ) to DC-DC power input.head set is under
construction.
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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
DC-DC convertor. input 2 V to 5.5 V makes 5 V to two head amp.
in case not use this then need to put 5 V to 10 V : 80 mA to head
amp.when 2.2 V input : 256 mA, when 2.7 V input 224 mA, when 3.9 V
input 128 mA, when 4.4 V input 114 mA, when 5.2 V input 97
mA.actual current is depend on brain wave input voltage. high input
voltage will increase current.
battery holder and 4 PIN cable to brain wave microphone.
SoundBrain output connect to left and right RCA and mini
jack.battery folder and power connector. you can put small battery
to head set unit also.
connect output connector to iPhone/iPad/LapTop Mac/other audio
recording device input with audio cable can record brain wave. (
recording brain wave frequency isdepend on device ). need to use
battery operated recording device. iPhone/iPad need to use stereo
audio input adapter.connect audio optical isolation device can be
use AC power recording device.
connect output connector to pi crop circle LED's Arduino Nano
analog input via level limits, sift and high cut filter circuit.
this parts is under construction.connect USB cable Arduino and
LapTop Mac.
for iPhone / iPad connect Redpark C2-DB9 / C2-DBV / C2-TTL with
there SDK you can develop own application that get brain wave Raw
data stream from Arduino.
Wireless power transmission system. put wireless power receiver
to under the pi crop circle LED. it is Nikola Tesla's technology,
begging of 1900, Tesla Tower atShoreham Long Island New York.
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Step 4: Prototype 3prototype 3
Arduino Uno + current IBVA hardware amp board with cable and
head pad .use IBVA hardware amp board, cable and head pad. need to
connect analog output to input and digital output to clock input of
filter on the board.
current IBVA Bluetooth and amp board design for stable operation
and high sampling rate, etc.however can not modify hardware
operation by end user.this configuration can modify by end user.in
case you like you can buy this amp board.
Step 5: Codecode
Arduino code.prototype 1prototype 2prototype 3
Quartz Composer IBVA plugin for MacUse Quartz Composer IBVA
plugin for Mac to monitor 4 channel Raw data number from prototype
1 unit.XCODE source and sample QC file : IBVA QC folder.zip
Download .open source. free.
Laser Cutter Coral Draw file for prototype 1 and 2.Pi Crop
Circle for Top. : pi5Sep2012.cdr Download .
Original IBVA user can make like this prototype 1 and 2 in case
like to do.Also this prototype 1,2 and 3 work with newest IBVA
V5.0.8.5 application for Mac. All IBVA user since 1991, can get
this IBVA V5 application as free.not IBVA user need to buy IBVA 5
application in case like to use it. not open
source.http://www.psychiclab.net/IBVA/IBVAnew2.html
PC user can use Brainbay with IBVA plugin for OpenEEG project :
Open Source.
free.http://www.psychiclab.net/IBVA/BrainBay.htmlinstall BrainBay
need to replace BrainBay application with following.BrainBay IBVA
interface : BrainBay_IBVA.rar : 355 KBBrainBay IBVA interface with
Configure-IBVA files : BrainBay IBVA for Windows.zip : 684 KB
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Step 6: Open brain wave interface hardware circuit diagram2:
open brain wave interface hardware circuit diagram
UK news paper daily telegraph 1997.
this diagram is based on prototype 1, 2 and 3 and put together
with Arduino BT.
AMP parts diagram
high cut filter
Parts list :
head amp : OPA2111 X 2offset amp : TL062 X 2filter IC : MAX 7480
X 2R : 10 M ohm X 4R : 100 K ohm X 16R : 10 K ohm X 4R : 4.7 K ohm
X 2R : 2 K ohm X 2C : 47 F 16V X 6 ( this parts has polarity. +
side goes to + power, - side goes to - power )C : 106 X 2 ( 10 F =
10,000,000 pF)C : 104 X 6 ( 0.1 F = 100,000 pF)C : 331 X 4 ( 330
pF)C : 100 pF X 4C : 10 pF X 2Zener Diode : RD4.3E X 2Zener Diode :
RD5.6E X 2Trimer : 100 K ohm X 2Trimer : 50 K ohm X 2DC-DC :
RZC12W20 X 2 ( can use other companys DC-DC. +/- 12 V, 50 mA
)Arduino BT : X 1Arduino Proto Shield : X 1RGB LED : X 2
also you need to connect battery ( 2.0 V .. 5.2 V ) to Arduino
BT.( when 2.0 V : 520 mA, 2.7 V : 350 mA, 3.9 V : 220 mA, 4.5 V :
200 mA, 5 V : 180 mA )need to make or buy cable and electrode head
pad and electrode.
medical electrodes
this unit works with same Arduino code as prototype 1 unit.also
can useQuartz Composer IBVA plugin XCODE for Mac is Open source.
included sample QC file to show Raw data.Brainbay IBVA plugin for
OpenEEG project PC is Open
source.http://www.psychiclab.net/IBVA/BrainBay.html
Can use IBVA V5 application for Mac. all IBVA user since 1991
can get this free upgrade.in case you like you can buy it
also.http://www.psychiclab.net/IBVA/IBVAnew2.html
construction Photo and test procedure :
under construction.waiting to get some parts.
this diagram is basically same as i used over 30 years. so it
should work.in case you like you can start make same way. and/or
you can wait until i finish to make this. maybe need some
changes.so many times i made this amp parts different way, but head
amp is same amp electric circuit design.need to set two trimer,
total gain and offset for AD input of Arduino.need to set 200 micro
V p-p input makes 5 V p-p to Arduino analog input. Total gain is
25,000.also 2.5 V offset to Arduino analog input. output need to
set 0 to 5 V.
audio amplifier and brain wave amplifier difference is source
impedance and frequency response.usually audio amplifier design to
use low impedance source: like 4 ohm, 8 ohm, 200 ohm, 600 ohm, 1 K
ohm, 10 K ohm, 100 K ohm, this mean easy to make low noiseamplifier
but need wide frequency range. low frequency is 5 Hz, 10 Hz, 20 Hz
high frequency is 20 K Hz, 40 KHz, 80 KHz, 200 KHz.brain wave
amplifier need to design for high impedance source and low voltage
and current noise, low DC drift, but less frequency range like low
frequency is 0.16 Hz,0.5 Hz, 1 Hz and high frequency is 30 Hz, 100
Hz, 300 Hz, 1000 Hz. also need to have 100 to 1000 times more gain
than audio amplifier.
how to test:Connect 100 K ohm impedance source oscillator is
nice for noise test. put 1 to 10 micro V p-p, 1 .. 40 Hz sin
wave.amplifier noise is depend on skin and electrode
impedance.usually low impedance makes low noise. high impedance
makes more noise.not just only amplifier, resistance also has
noise. this noise is depend on temperature. low temperature makes
low noise, high temperature makes more noise. thisamplifier OPA2111
noise is very similar as resistance noise. only way to reduce noise
is make low temperature : this is current open technology
limitation. we can notmake low noise than resistance noise.depend
on skin and electrode conductance situation this noise will be
change.my head amp design try to eliminate this skin and electrode
conductance situation depend on person and other issuer. Usually 10
K ohm to 1 M ohm is skin andelectrode conductance. many years ago
EEG technician's one of knowledge is how to put nice way electrode
to skin. mean set low impedance between electrode andskin. because
that time amplifier quality was not good when input impedance is
high.in generally say low impedance person is relaxed. high
impedance person is more stress.
This unit can see less than 1 micro V p-p brain wave. it is
professional quality EEG system.digitally control filter works very
nice. can set cut and/or no cut 50 Hz to 60 Hz AC power noise which
come from any where in the room. 50 Hz and 60 Hz is depend on
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country, only Japan has two AC power
frequency.http://www.psychiclab.net/IBVA/50Hz60Hz.htmlCan set
Aurduino program to see this AC frequency also.in case you like to
see more high frequency than 50 Hz to 60 Hz AC power noise then
need to careful for setup all system condition. it is not easy this
setup for beginner.Prototype 1 Aurduino code set this frequency to
40 Hz, so no problem for 50 Hz to 60 Hz AC power noise. however too
many noise will still get AC noise.doing experience outside is so
nice to eliminate this AC noise.
masahiro kahatapsychiclab.net
-
http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
Step 7: Other Arduino connection3: Other Arduino connection
Arduino Pro mini is very nice small size, with Arduino Bluetooth
Wireless Serial Port Module to put head set is under going
project.also put all this to OLED HMD head pad is under going
project.to see video, 3D brain wave interactive OpenCL animation is
nice to use
this.http://www.psychiclab.net/Movie/IBVAopenCL1.html
3D model for OLED HMD head pad brain wave interface.2 ch
amplifier, Arduino Pro mini + bluetooth, Battery. shows 3 electrode
and 5 electrode model.
after made it, let you know.
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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
Step 8: BrainVJ sampleBrainVJ sample
OpenCL BrainVJ : actually this animation is 3 D stereoscopic in
the 360 degree HDRI panorama
image.http://www.psychiclab.net/Movie/IBVAopenCL1.html
Quartz composer
BrainDJVJ:http://www.psychiclab.net/Movie3/BrainSoundDJVJ.htmlhttp://www.psychiclab.net/Movie/SeraPhiParty.html
waveUFO opening video at kiev
Ukrainehttp://www.psychiclab.net/Movie/kievWaveUFO.html
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http://www.instructables.com/id/open-brain-wave-interface-hardware-1/
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