al885@CWNS9.INS.CWRU.EDU (Gerard Pinzone) (02/28/91)
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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