Contents of the GLASSES.TXT file
Converting the SEGA 3D glassses adaptor for use with a parallel port.
You will need the glasses and adaptor card from SEGA, a power ssupply
(producing 5 volts and something between 10 and 12 volts (all DC)), a male
DB25 connector, and some wire. The tools needed are a soldering iron, long
nose pliers, and a wire cutter.
Included in this package are three GIF files: SEGA1.GIF, a drawing of what
to do to the adapter board, and SEGA2.GIF which is a color scan of my board
after the modifications. Hopefully they should be fairly obvious, so I
won't go over it again in this file.
The control wire gets connected to pin 4 of the DB25 and GND gets connected
to pins 18 through 25. See SEGA3.GIF for the pinout of the connector,
remember, the drawing is as you see it with the solder side of the pins
The power supply.
You can either get voltages you need from the PC, or use an external
supply. The connectors which plug into disk drives will power this quite
nicely, but you have to get the cable out of the machine somehow. If you
want to go the external supply route, you can get a 5 and 12 volt version
they are fairly common. Or you can make one from parts at Radio Shack if
you want. It consists of the 9 volt DC transformer (one of those big black
cubes that plugs into the wall, with a wire coming out), this actually
produces 9.7 volts which is close enough to run the glasses. You will also
need a 7805 3 pin regulator to produce the 5 volts, see its package for
details on how to hook it up.
You can put the whole thing in whatever type of box you want, or leave it
dangling around if you want to look like a "hacker".
As is the usual case with such things, if you blow up your computer while
trying this project (or burn your finger or whatever) I would appreciate
NOT being sued . Attempt this at your own risk.