Andre Abelian wrote:

> Hi to all engineers.
> I am looking for data information about remote
> controls.start,data,stop
> bits.
> I connected  directly from remote ic output to digital scope I almost
> do
> not see any
> difference when I press power button or any other the only thing I
> found
> is
> that frequency is 38.45 khz
> I use to know name of web site that contained  information about every
>
> remote controllers
> just about every brand names it was really excellent web site.
> Does any one know any web site that has info about remote controls or
> does any body worked on
> this kind of project ?
>
>                                                 thank you
>
> Andre.
>
> ==========================================
> = http://www.compufire.com               =
> = mailto:andre@compufire.com             =
> = mailto:mcu-engineering@compufire.com   =
> = Andre Abelian: Engine Electronics, Inc.=
> = Tel 909-589-5485  Fax 909-598-5695     =
> ==========================================

   Dear Andre

you faced with the problem I also did
The problem is that some of the remote control units send the command
itself only one time when a button is pressed and then continue sending
"repeat" command which is the same for all buttons. So when you try to
view it on an oscilloscope screen you can see only "repeat" command
which is periodic.
To catch a real code from remote unit you should use either storage
oscilliscope or (which is more realistic) use a simple method I used:

I connected IR receiver to parralel port of a PC and wrote simple
programm on quick BASIC which reads data from port and displays IR
singnal on a PC screen

If you need source code in basic  I can email it to you.

Regards,
Vassili

BTW it does not matter what is modulation freq in your remote unit.
Should work with any.