D
Don Bowey
- Jan 1, 1970
- 0
On 9/20/05 8:36 AM, in article
[email protected], "Mad Scientist
Jr"
paddle ,
then you will not use the 5V connection. The voltage reference will
be the
audio ground. Just in case it hasn't been mentioned, it would be a
good
idea to put a diode in the circuit path to assure that only a positive
voltage is applied. You can protect the input further, by putting a
250k or
1 Meg resistor in series with the audio - Atari connection. For
protection,
start with the high R and reduce to a lower value if more current is
needed.
Don
[email protected], "Mad Scientist
Jr"
If you are going to connect the line level voltage to replace theThat sounds easy, I will need to multimeter it.
2 dangers:
1) blowing up the stereo if the output resistance is not 8 ohms (or
whatever the output expects for headphones) - that's why I originally
said Line Level, this would be a single standard as opposed to
different stereos which need different resistance speakers.
2) blowing up the video game - it sends 5v out and measures how much of
that comes back. I assume the signal from the stereo sends voltage as
well. So what happens when you have the 5V from the game, plus the
volts from the stereo? What if the game can only handle at most the 5v
it is sending out? Therefore, I would rather make a circuit that 1)
controls resistance 2) provides some attenuation so the stereo doesn't
blow up
I basically want to control a video game (Atari 2600 paddle controls
are 1 MOhm pots connected to 5V DC) with my stereo.
Now that's a cool idea. Let your stereo do the playing for you while you get
on with your life...
The way your pots are connected suggests that your game is already
voltage
driven, so you would only have to amplify your audio to cover the 0-5V
range. For starters try connecting your audio output directly to the
paddle
pin (and gnd to gnd) and see what happens.
Foo,D
paddle ,
then you will not use the 5V connection. The voltage reference will
be the
audio ground. Just in case it hasn't been mentioned, it would be a
good
idea to put a diode in the circuit path to assure that only a positive
voltage is applied. You can protect the input further, by putting a
250k or
1 Meg resistor in series with the audio - Atari connection. For
protection,
start with the high R and reduce to a lower value if more current is
needed.
Don