Optical data transmission
- Hi all,
I've been lurking on this list for quite a while, and
so far I have not had much to contribute, until now.
I think you can make a good compromise between a
simple optocoupler and IrDA. How about using Toslink?
It is commonly used for optical transmission of audio,
but you can transmit any data you want.
Take a look at the schematic (pdf file) and tell me
what you think. The other file is a schematic for a
spice simulator called Simetrix. A very useful demo
(limited but free) It's available at
On one end I use a regular toslink transmitter ($5)
and on the other a cheap transistor circuit powered by
the serial port. The regular toslink receiver is too
power hungry to be powered this way. So far, I've only
tested with a fairly short optical cable, about 1
meter (3 feet) but it should work with much longer
cables, perhaps 5-10 meters.
Do You Yahoo!?
- On 09-Dec-01, Doug Sutherland, wrote:
>Hi Chuck,Hmmm, I didn't know that. I thought Rob had removed
>>> How much $ for the infamous Roshi?
>> $3995, complete.
>Last week I discovered some info on Roshi on this page:
>http://www.futurehealth.org/NFsystems.htm (info below)
all references, to Roshi, from his site.
>I have a few questions on Roshi ...The AVS stuff is build into the EEG unit, and can
>1) Is that $3995 complete with an Amiga system as
> described on the futurehealth site?
>2) Some time ago you mentioned a standalone Roshi
> that requires no PC (just EEG & Light Goggles).
> Is that available now? What's the price?
operate _on top of_ any NFB software. $1995
>3) I've been puzzled about this for a long time:It just means that the EEG is used to set the
> you've said that Roshi differs from everything
> else because it's a feedback loop, using the
> EEG signals to change the entrainment activity
photo or mag stim parameters. It acts as sort
of a neuro-mantra. Kinda like feeding the brain
back on itself, to garner its own attention.
Until the patents happen, I can't say anymore.
> But is there settings for differentAll of the above happen, /automatically/ ;)
> targets? For example, can I configure Roshi for
> targets in different frequency bands? Can I
> program it for different things like relax vs
> deep relax vs intuition vs clarity/attenion?
> Can I select these targets or are they fixed?
There are no `real' adjustments, on the standalone
unit; just LED/MagStim intensity adjustments. Your
personal EEG context sets its feedback parameters.
>TIA,Don't have time for loads of questions. I prefer lurking ;)
>Roshi EEG Biofeedback Synchrony & Sound/Light EEG (Dis)EntrainmentWhat's to explain, here?
>Integrated System. The Roshi is Unique in a Number of WAYS
>*The ROSHI is a complete, self-contained two/four channel EEG
> neurofeedback and and training system. It comes with an EEG
> amplifier, a set of light emitting goggles and an AMIGA computer
> and monitor (ROSHI, with its high perforamnce multi-media
> capabilities, was developed before the IBM became capable of
> sophisticated multimedia performance). .
>ROSHI offers a combination of features not found on any other
>EEG biofeedback system.
>First, its feedback response time is extraordinarily fast. It
>is capable of responding to scalp events on a time scale of
>about 30 milliseconds - that's 0.03 of a second - the fastest
>response time of any computerized system.
>Second, it has seven feedback functions:
> Light Flash Feedback ("Talos-4" function):
> Bi-Hemispheric Spectral Amplitude Reduction Training:
> Bi-Hemispheric Amplitude Stability Training:
> Neural Efficiency Training:
> Synchrony Training:
> Light Flash Assisted Single Hertz Uptraining:
> Inter-Hemispheric Light Flash Training.
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-/--Chuck Davis -/-----\-----/---\---/-\---/---\-----/-----\-------/-------\
RoshiCorp@... \ / \_/ `-' \ / \ /
\ / `-' #11-9-01# `-' \ /
On a path to Peace of Mind...