Hello everyone

I have specific signals in my PC and I want to send them out to a circuit connected myself.

What is the method that I can these signals

Is there a need for a specific hardware to be connected to my PC to do this job or a specific software installed in my PC?

thank you in advance

 

What do you mean by 'signals'? One of the simplest ways to communicate is with a serial data port that uses a USB port on the PC.
https://www.adafruit.com/product/3309?gclid=CLWMycafitUCFYRrfgodKYIGnw

There are also fairly simple USB daq boards for the PC like this one.
https://www.velleman.eu/products/view/?id=404998

 

Hello everyone

I have specific signals in my PC and I want to send them out to a circuit connected myself.

What is the method that I can these signals

Is there a need for a specific hardware to be connected to my PC to do this job or a specific software installed in my PC?

thank you in advance

The answer is Yes and Yes.
But you do have to elaborate what you mean by signals.

You can also transmit data by smoke and mirrors, light and sound, radio waves and email. Take your pick.

 

Or if you have a COM port on your PC or a option on the MB for it, you can use RS232 direct to a device, PIC etc with a MAX232 IC on it.
Max.

 

You have a choice of RS232, USB and whatever printers used to use.

 

Ok, thanks to all for their answer

To describe my problem more,

I generate specific signals in Matlab (I can generate them even in Visual Basic or Visual C) and now I want to send these signals out to a card that I build to examine my circuit and to complete my project.

To be more specific, my signals are neural like signals.

now what is your recommendation to me to do, or what to use and how to use any part you advise it to me

 

If they are reduced to a digital format then any of the methods listed so far should work?
Otherwise how are they presently represented?
Max.

 

You have a choice of RS232, USB and whatever printers used to use.

The printer port is (was) easiest, but I don't think many have them anymore.

Most recent M$ OS's won't allow direct control of ports - there's various patches that can be found online, but beware - "thar be dragons".

 

The printer port is (was) easiest,

Personally I always found RS232 the simplest. Especially if a longer distance was needed.
Smaller cable also!
Max.

 

what is your circuit? what is the volume of data you plan on sending?
RS232 is simple but it is not going to cut it for large volume due limited bandwidth and cable length.

 

Ok, thank you again for your replies

I don't have RS232 port on my computer, also I more prefer USB.

my signals have sampling frequency about 20 kHz and their length don't exceed 10 second

So, if I want to use USB what I hardware part I need and what software I need and what Ian field say [but beware - "thar be dragons"].

 

There is USB to RS485 converters that are cheap.
Max.

 

How many signals, what datatype or bit resolution for each signal..?

 

There is USB to RS485 converters that are cheap.
Max.

That is good, now how I can communicate with USB port to send data, Could you please refer to a reference or document that help me to do that

 

How many signals, what datatype or bit resolution for each signal..?

They are many signals but I tested them one after one, and yet I don't decide the bit resolution and I think I should wait until I know how I will send the signal

 

TS said he is generating 20kHz "neural like signals" from Matlab.
Simple enough. Just output the signal using wavplay( ) or sound( ).
Plug into the earphone/headphone or line output jack that there you'll have your signal. No additional hardware required.

 

Ok, thank you again for your replies

I don't have RS232 port on my computer, also I more prefer USB.

my signals have sampling frequency about 20 kHz and their length don't exceed 10 second

So, if I want to use USB what I hardware part I need and what software I need and what Ian field say [but beware - "thar be dragons"].

You probably do have RS232. The last few motherboards that I bought did not have RS232 DB9 connector, but the motherboards did have pin outs for it. When I needed DB9 connector for the fax modem, I just bought a bracket with DB9 connector and plugged it into the RS232 pin out on the mobo.

 

If you use sound card, a cable like this might be helpful (or not). I got a similar cable from work when they were throwing random stuff away. That is the only reason I learned of its existence. I would have never though of combining 3.5mm audio jack with DB9.

 

TS said he is generating 20kHz "neural like signals" from Matlab.
Simple enough. Just output the signal using wavplay( ) or sound( ).
Plug into the earphone/headphone or line output jack that there you'll have your signal. No additional hardware required.

I will try this idea it is look simple

 

You probably do have RS232. The last few motherboards that I bought did not have RS232 DB9 connector, but the motherboards did have pin outs for it. When I needed DB9 connector for the fax modem, I just bought a bracket with DB9 connector and plugged it into the RS232 pin out on the mobo.

unfortunately, I am using a laptop