<x-flowed>Hi Rodrigo,

In order to be able to be able to reproduce any IR command, I did the 
following:

1. Added 32KB of external RAM.
2. Made a timer routine that was able to measure pulses length and kept 
pulse duration in 16 bits for each incoming pulse.
3. Used modulated PWM output at the needed frequency and gated by the pulse 
duration as measured.

You can not implement my algorithm without external RAM since each pulse 
train was kept as a list of time measurement which was longer then the side 
of file registers in the PIC16C74.

Chaipi

At 15:06 02/03/00 -0400, Rodrigo J. Castillo M. wrote:
>Hi Chaipi,
>
>     I'm new in pics, but i've completed some simple thinks like alarms, leds
>blinking , etc.
>My new proyect is to make a learning IR control like you did. But  my code
>has some fails. I mean, program save and play the data, but i think that
>doesn't play what it read. Probably timer troubles. Àcould you showme your
>code to take some ideas?. I think that the limited ram space will give me
>some troubles for save multiples buttons in a future.
>
>     Thanks in advance. (sorry for my English)
>
>
>
>----- Original Message -----
>From: Chaipi Wijnbergen <chaipi.wijnbergen@WEIZMANN.AC.IL>
>Sent: Wednesday, March 01, 2000 4:02 PM
>Subject: TV/VCR R/C for the disabled
>
>
> > Hi Andy,
> >
> > A couple of years ago I built a Remote Control unit that was able to learn
> > any given remote control for any device and then reproduce this by
>commands
> > either from the PC or a stored time/command configuration, this was done
> > with a PIC.
> >
> > I was thinking that I would integrate it with a voice recognition module
> > and do exactly what you are trying to do and thought of the same market
> > share that you are developing for. After some marketing research that I
> > did, I decided not to continue with this project. But, the idea is still
> > nice and I hope that someday someone would do this and disabled people
> > could enjoy it.
> >
> > Chaipi
> >
> >
> > At 12:36 01/03/00 +0000, Andy Bassam wrote:
> > >hi,
> > >as a part of my final year project I am building for disabled people. I
> > >need to control television and telephone using PIC . any
> > >suggestions welcome
> >
> >
> >                                \\\|///
> >                              \\  ~ ~  //
> >                               (  @ @  )
> > ----------------------------oOOo-(_)-oOOo---------------------------------
>-----
> > !
>!
> > ! Chaipi Wijnbergen
>!
> > ! Electronics/Computer Eng. M.Sc.  Tel    : +972-8-9343079
>!
> > ! Optical Imaging Laboratory       Fax    : +972-8-9344129
>!
> > ! Brain Research Center            Email  :
>chaipi.wijnbergen@weizmann.ac.il  !
> > ! Weizmann Institute of Science    URL    :
>http://www.weizmann.ac.il/~chaipi !
> > ! Rehovot 76100 ISRAEL
>!
> > !
>!
> > ------------------------------------Oooo.---------------------------------
>-----
> >                           .oooO     (   )
> >                           (   )      ) /
> >                            \ (      (_/
> >                             \_)
> >

</x-flowed>