From: Joerg Hansmann (jhansmann_at_g...)
Date: 2000-12-11 09:28:32
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 )
...
> 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 ?
> > 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.
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 ?
> 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 ?
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.
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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