From: ldean_at_metrowerks.com
Date: 2001-12-05 00:41:47
Dear Jim,
I just tried running your slink12r program on my Win98 box, but have
not been able to get past the driver problem. I copied the driver
file to (1) the directory where slink12r is located (2) the C:
\Windows\System directory and (3) the C:\Windows\System\Drivers
directory, and I also tried rebooting. Can anyone give me more advice
on this?
I would prefer to get schematics in gif or jpeg. Thank you for
sharing!
Laura
--- In buildcheapeeg_at_yahoogroups.com, "Jim Meissner" <jpmeissner_at_mindspring.com> wrote:
> Dear Laura:
>
> > Also, Jim's page states that his firmware supports a 0-60 Hz
> > frequency range, while your page states he achieved a band width
of
> > 0.1-100 Hz. Can you clarify this for me?
>
> The 3 byte or 2 channel version (a8.asm) can run much faster. I
believe I was able to see 0-200 Hz. To my disappointment, I saw no
data above 50 Hz (with my electrode placement) so I reduced the
sampling rate and went to 4 channels (a9.asm) instead. At that time,
working with a 386 computer, time was a "real" problem.
>
> Have you run the program (slink12r) and (egavga.bgi) that I put on
my webpage? Log001.dat is a test file and Downey.dat is a very
interesting session with a gifted medium.
>
> I will be glad to share my input amplifier schematic. What format
do you want?
>
> The input amp I used is the Texas Instrument TL084. I think I paid
about $1 ea. This is not the very best amp available, but it did the
job that I needed to do at the time.
>
> Juergen P. (Jim) Meissner
> Check out my Website at www.MeissnerResearch.com
> Read about the benefits of the Brain State Synchronizer sounds for
improving your life and health.
> ----- Original Message -----
> From: ldean_at_metrowerks.com
> To: buildcheapeeg_at_yahoogroups.com
> Sent: Tuesday, December 04, 2001 2:18 PM
> Subject: [buildcheapeeg] Re: New Info on Various Schematics
>
>
> Doug,
>
> Under "design with a minimal number of parts" you link to
> www.biosemi.com while next under "modeled after the Biosemi
designs"
> you link to www.biosemi.com/publications/artikel7... perhaps
these
> are reversed? You said before that Joerg's design is based on the
> Biosemi design; can someone clue me in to which Biosemi design it
is
> based on?
>
> Also, Jim's page states that his firmware supports a 0-60 Hz
> frequency range, while your page states he acheived a band width
of
> 0.1-100 Hz. Can you clarify this for me?
>
> I priced the op-amps in the low part count design at digikey at
about
> $20 - $25 for one channel (resistors and capacitors not
included).
> The op-amps in the Brainmaster look like they would cost about
$10,
> but it's hard to tell because they are only sold from digikey in
> units of 100 or more. Of course, I am also eager to see Jim's
circuit
> - especially if it can detect an extra 60 Hz of data over the
Biosemi
> design.
>
> Laura
>
> --- In buildcheapeeg_at_yahoogroups.com, Doug Sutherland <wearable_at_earthlink.net> wrote:
> > I added some brief descriptions next to all of the EEG
> > schematics on my site that make it easy to see how all
> > of various circuits differ and what parts they use. I
> > also added a schematic for an EEG that includes a tone
> > generator and uses potentiometers to set thresholds.
> >
> > http://home.earthlink.net/~wearable/biopsy/#schematics-eeg
> >
> > -- Doug
> >
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > The human-computer interface seems to be stuck on the
> > WIMP (windows, icons, menus, pointer) model. What I'd
> > like is to have you call me and my clothing answers.
> >
> > http://home.earthlink.net/~wearable/jacket-wearable.html
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:32 BST