Subject: questions, sega glasses, and gyroscopes

From: [email-masked]
Date: Fri, 17 Jan 92 11:15:12 EST

Hi everyone,

I posted a while back to ask if anyone could answer some questions
about the Sega glasses circuit.  Someone else (Newby?) asked the
same question.  I haven't seen any answers yet.  Were there any?
My questions are two types of dumb questions.  First, what types
of diodes are used in the circuit?  Someone said it might not matter.
So, just *any* type of diode?  Remember, you're talking to someone
who doesn't know a diode from a resistor.  Second, which side of
diode connections are the anode and cathode?  The only reason I ask
is because when I went to Radio Shack to get "a diode" I found out
that there were all different types and that they apparently have
anodes and cathodes.  Hey, I told you they were dumb questions!!

The second type of dumb question I have just concerns the ascii-matic.
There are labels for some, but not all, of the resistors that show
their type.  Some of the labels are near more than one resistor in the
picture, so it's not clear to me which of the 2 or 3 specified types
of resistors to use in some instances.

I hope that my asking specific questions will help someone to be able
to answer my plea.  I also hope that whoever it was that posted saying
they couldn't get the circuit to work can get it to work based on this
information.  That would mean the connections and other stuff in the
diagram are OK (probably) and I can continue, fat, dumb, and happy!!

FYI, it only took Sega about two weeks to get my glasses to me.  The
ones I got appear to be new, not "reconditioned".  When I ordered them
they told me I may get reconditioned ones.  They are pretty uncomfortable,
but maybe I'll be so impressed with what I see that I won't notice.

Also, FYI, I saw a clip on some TV program a couple of days ago about
gyroscopes.  Apparently some company (maybe Gyration?) has found a way
to make them cheaply.  They are making them for about $500.  They said
that they expected that mass production should bring the price down to
about $20.  Of course there was no spec information given, but maybe
we'll have an affordable alternative to the Polhemus and the PG ultra-
sonics before long.

Bill     [email-masked]