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- Path: sparky!uunet!cs.utexas.edu!uwm.edu!ogicse!plains!news.u.washington.edu!milton.u.washington.edu!hlab
- From: Jeremiah.Blatz@dartmouth.edu (Jeremiah Blatz)
- Newsgroups: sci.virtual-worlds
- Subject: Re: TECH: SEGA light guns
- Message-ID: <1992Jul24.050912.17067@u.washington.edu>
- Date: 23 Jul 92 18:42:24 GMT
- Article-I.D.: u.1992Jul24.050912.17067
- References: <dZR-rLB@engin.umich.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: Dartmouth College, Hanover, NH
- Lines: 40
- Approved: cyberoid@milton.u.washington.edu
- Originator: hlab@milton.u.washington.edu
-
-
-
- In article <dZR-rLB@engin.umich.edu>
- bovine@engin.umich.edu (Mitchell Rohde) writes:
-
- > Sega light "phasers" : are they good for anything?
- > What is in them? How did they work?
- >
- > I can buy one surplus here for about $10.....
-
- Well, I took apart my Nintendo light gun and came up with the
- following.
-
- Known:
- There is a lens in the muzzle, then what appears to be a photo-{diode,
- resistor} behind it. The light sensor is attached to a small circut
- board with some resistors and capicitors on it.
- The trigger is connected to a micro-switch (duhhh).
- The micro-switch and small circut board are connected to a larger, more
- complicated circut board in the handle. This board is connected to the
- cable which leades to the deck.
- These appear to be the only inputs, there don't appear to be any
- outputs (except for the cable).
-
- My thoughts:
- I think that the photo-thingie is a photo-resistor. It either acts
- differently when exposed to different frequencies or amplitudes of
- light. The controlles sends the gun various colors/brightnesses of
- light to watch for. When you pull the trigger, the gun opens the circut
- that goes through the photo-resistor, and the resistor sends back a
- signal to the gun board. If the amprege is the one associated with one
- of the colors/brightnesses that the deck requested, the gun sends a
- signal to the deck.
- I must say that I'm not all that strong on this stuff, so please take
- that into account when reading this/correcting me/flaming me.
- I intend to test my theories a little by shooting various things with
- the gun. I will, of course, post my results.
-
- Jeremiah
- jerbl@dartmouth.edu
-