Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!linac!att!ucbvax!CWNS9.INS.CWRU.EDU!al885
From: al885@CWNS9.INS.CWRU.EDU (Gerard Pinzone)
Newsgroups: comp.sys.atari.st
Subject: Fire button light
Summary: Here is how to make it.....
Message-ID: <9102280609.AA13946@george>
Date: 28 Feb 91 06:09:39 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: gpinzone@george.poly.edu
Organization: Polytechnic Univ., Farmingdale NY and East Coast Anime
Lines: 38

Here is a very simple circut that will light a LED whenever you push the
fire button. You could also use it for any other movement (joystick).


               Pin 7   O   +5V
                       |
                       |
                       /
                  R2   \   270 ohms
                       /
                       \
                       |
                       | +
                      LED
                       | -
                       |
                      /
          270 ohms  |/
Pin 6 O----\/\/\/---|    2N3904 or any NPN you can get your hands on.
             R1     |\
                      \
                       v
                       |
               Pin 8   O   GND


You can use any NPN transistor (like a 2N2222) you have although you may
have to change the resistor values slightly. R1 is optional....it works
fine with or without it. I didn't calculate or measure ANY values. It just
worked.

=========Gerard Pinzone=======================gpinzone@george.poly.edu=========
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