TTL to line out / Line out to TTL Schematics

V

Victor Nowecki

Guest
I have an IC the produces a signal / code at TTL levels that I would like to
convert to a Line out signal so that I can record the codes on my computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would be
muchly appreciated.

Thanking you in advance

Regards
Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au
 
"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40bd4489_2@news.chariot.net.au...
I have an IC the produces a signal / code at TTL levels that I would like
to
convert to a Line out signal so that I can record the codes on my
computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would be
muchly appreciated.

Thanking you in advance

Regards
Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au

From memory TTL is 0V to 5V and a line in is -1V to 1V a simple voltage
Click to expand...
divider would be the easiest just not sure what resistor values to choose,
for suitable current and/or impedance of the line in device.
 
"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40bd4489_2@news.chariot.net.au...
I have an IC the produces a signal / code at TTL levels that I would like
to
convert to a Line out signal so that I can record the codes on my
computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would be
muchly appreciated.

Thanking you in advance

Regards
Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au


Why use an audio interface? You'd be better off doing a TTL-RS232 conversion
Click to expand...
and using the serial port with a comm program. Or using the parallel port.
For either option you'd probably find that shareware/freeware is available
to do the driving.

Ken
 
On Thu, 3 Jun 2004 08:24:57 +1200, "Ken Taylor" <ken123@xtra.co.nz>
put finger to keyboard and composed:

"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40bd4489_2@news.chariot.net.au...
I have an IC the produces a signal / code at TTL levels that I would like
to
convert to a Line out signal so that I can record the codes on my
computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would be
muchly appreciated.

Thanking you in advance

Regards
Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au


Why use an audio interface? You'd be better off doing a TTL-RS232 conversion
and using the serial port with a comm program.
Click to expand...
This approach assumes that the data are 7 or 8 bit, and are framed
with start/stop bits and optional parity bit(s).


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:sijsb09n6hej3md4uc686mpn5ovt4hctsk@4ax.com...
On Thu, 3 Jun 2004 08:24:57 +1200, "Ken Taylor" <ken123@xtra.co.nz
put finger to keyboard and composed:

"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40bd4489_2@news.chariot.net.au...
I have an IC the produces a signal / code at TTL levels that I would
like
to
convert to a Line out signal so that I can record the codes on my
computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would
be
muchly appreciated.

Thanking you in advance

Regards
Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au


Why use an audio interface? You'd be better off doing a TTL-RS232
conversion
and using the serial port with a comm program.

This approach assumes that the data are 7 or 8 bit, and are framed
with start/stop bits and optional parity bit(s).


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
Click to expand...
Not at all. There's plenty of data acquisition software out there which will
do it without such extras. You snipped the option of parallel port, but that
is equally useful.

Ken
 
"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40bd4489_2@news.chariot.net.au...
I have an IC the produces a signal / code at TTL levels that I would like
to
convert to a Line out signal so that I can record the codes on my
computer.
Then I'd like to play these codes, take them from the line out from my
computer or CD player and convert the level back to TTL Logic.

Anyone out there with any ideas or schematics who can direct me would be
muchly appreciated.
Click to expand...
It would be unusual for a device to clock purely at low audio frequencies.

TonyP.
 
Let me explain what I am proposing to do.
I am currently designing and manufacturing some equipment that will enable
us to fire off fireworks remotely via radio control.
We are using a chipset which are encoders / decoders, 10 bit address, 8 bit
data.
The ics work on 5vdc and sends out the data.
I use some Audio editing softeware ( Wavelab ) to mix music.
If I wish to program a show to music or just a show I would like to take the
encoded data, convert it to a line out signal so then I can record
the individual codes ( cue1,channel 1 etc).
I can then move and positon these codes accordingly to where I would like
the firework to go off.
Once I have all these codes in place, I can then burn a music CD with the
music in mono left channel and the data on the right channel which no one
gets to hear.
either via CD player or Computer the line out signal will be converted to
TTL
logic and sent to a transmitter.
All I do is hit play on the the CD player, sit back and watch the show.
Of course RS232 is not viable.

Basically it's simliar to what the big boys are doing.

Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au

From memory TTL is 0V to 5V and a line in is -1V to 1V a simple voltage
divider would be the easiest just not sure what resistor values to choose,
for suitable current and/or impedance of the line in device.
Click to expand...
 
Sorry I read message the wrong way around. Looking at it this way I
would go with a compartor, set one input pin (not sure which one) to about
0.7V. The output from the stereo goes to the other input pin. When the
voltage from the stereo rises above 0.7V the output of the comparator with
jump to near the rail voltage. once it drop below 0.7 volts the output will
drop to near -ve supply rail in this case 0V. The near part you would have
to check from the specific data sheet of the comparator you look at buying,
most I would say would be close enough to set off a TTL circuit, if you use
a 5V supply.
ohh and hope like anything you don't get any spikes on the line that
rise above 0.7V.
Shaun

"Victor Nowecki" <casdsys@box.net.au> wrote in message
news:40c09ada_2@news.chariot.net.au...
Let me explain what I am proposing to do.
I am currently designing and manufacturing some equipment that will enable
us to fire off fireworks remotely via radio control.
We are using a chipset which are encoders / decoders, 10 bit address, 8
bit
data.
The ics work on 5vdc and sends out the data.
I use some Audio editing softeware ( Wavelab ) to mix music.
If I wish to program a show to music or just a show I would like to take
the
encoded data, convert it to a line out signal so then I can record
the individual codes ( cue1,channel 1 etc).
I can then move and positon these codes accordingly to where I would like
the firework to go off.
Once I have all these codes in place, I can then burn a music CD with the
music in mono left channel and the data on the right channel which no one
gets to hear.
either via CD player or Computer the line out signal will be converted to
TTL
logic and sent to a transmitter.
All I do is hit play on the the CD player, sit back and watch the show.
Of course RS232 is not viable.

Basically it's simliar to what the big boys are doing.

Victor Nowecki

Please email me direct
e-mail at casdsys@box.net.au

From memory TTL is 0V to 5V and a line in is -1V to 1V a simple voltage
divider would be the easiest just not sure what resistor values to
choose,
for suitable current and/or impedance of the line in device.
Click to expand...
 
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