From: yaniv_vi_at_yahoo.com
Date: 2000-12-13 04:07:31
--- In buildcheapeeg_at_egroups.com, "Joerg Hansmann" <jhansmann_at_g...>
wrote:
> Hi Yaniv,
>
> ----- Original Message -----
> From: <yaniv_vi_at_yahoo.com>
> To: <buildcheapeeg_at_egroups.com>
> Sent: Sunday, December 10, 2000 4:00 AM
> Subject: [buildcheapeeg] late reply to jeorg letter
>
>
> ...
> [smd soldering]
> > i can't read pdf .
> > tell me what type of package and i'll tell if it's complicated/
>
> Have a look a the package descriptions in the attachment
> (hope your browser supports *.png )
don't have it
>
> ...
> > right - so we'll add alawyer to the group.
> ...
> > > > would like to build one board and send it to me - i'll pay
the
> > > > costs ? how much are the costs ?
> > >
> > > Material cost (without casing) is about 200,- DM.
> > > shipping and insurance = ? (depends on the destination)
>
> What destination ? Tibet ?
katmandu nepal /or india
>
> > > Can you make money transfer to a german bank ?
> > > (When I tried to make a transfer from Germany to USA,
> > > I found out, that the banking fees are extremely high)
> >
> > i'll work oon this
> ...
>
> > batteries . 6 or 5 batteries of 1.5v . if you can you a ldo it's
> > better - less energy waste .
>
> What about a switching regulator ? The efficiency should be
> unmatched by analog regulators.
for this phase stick to analog one's it's safer better
>
> How long should one set of batteries work ?
>
>
> > > What connectors/sockets for electrodes are required ?
> > > (banana sockets ? (in german : Bananenbuchse))
> > > or better BNC or cinch ?
> > > I don't know the standard for eeg-electrodes...
> > >
> > > BTW. Where can I get good and low-priced EEG-electrodes ?
> > >
> >
> > can you help me with all of this .
>
> I am not so sure. Until now I have made several
> internet searches to find EEG-Electrodes - and
> failed to find something useful. Some products
> were extremly high priced and I still do not know,
> what the standard socket for EEG is.
> BTW: What socket and what electrodes does the
> brainmaster use ?
in the brainmaster site they explain how to build your own
electrodes .
aklso you can join the brainmaster email group
>
> > basicly if you could send me the full machine with full
accesotries ,
> > and i'll pay you it would help me alot .
> > you think yiou'll have time for it ?
> > if not don't worry man ,i'll try get by in another way .
> >
> > > > when it'll be ready stable enough
> > > > version of the h.w. - tested and tested in really measuring
> > > > brainwaves ?
> > >
> > > I have sampled real brainwaves with the RS232EEG and tried
> > > some alpha-feedback with Rob's Software.
> >
> > so it works ? you have gotten to stable alpha ?
>
> Hard to decide. The version of Robs software I used for
> this try, did not record the session and the feedback
> sound emerged and vanished. But that is probably
> because I am untrained.
> BTW. what training protocols are useful for what
> condition ? And what feedback methods are best ?
> e.g. I read that alpha is blocked with open eyes and therefor
> visual alpha feedback would be rather useless.
> Is there some synopsis of protocols and methods ?
>
> > >
> > > What are your demands for stability and tested in detail ?
> > basicly that i could operate it inside here
>
> I assume "here" is Tibet ?
nepal or india
> The temperature range and relative humidity range of the device
> will be limited. But I think that it should work were a Laptop PC
> works.
just at least define - theoretical working temperature by checking
datasheets ?
maybe fan ?
>
> However extensive tests (e.g. under varying temperature conditions)
> have not been made. The prototype does not even have a
> casing until now.
>
> So I really can not give any promises concerning stability before
> such tests have been done.
>
> >, and don't expect any
> > problems .
> > i'll think about resoanble demands.
>
> Yes. I agree.
>
> > anybody who can help on this it's
> >
> ...
> regards
>
> Joerg
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