If you are decided to use paralel port then take a look at : www.velleman.be They have two kits K8000 and K6714-16 that can together control 16 loads from PC.
Regards, Mircea Coman --- Declan Moriarty <[EMAIL PROTECTED]> wrote: > Thanks to all who replied on this. > > I came away with clear options: the parallel port > port ; and other ways. > > It could be done with a serial port or keyboard, but > either lacks the ability > to change more than 1 cell rapidly. They will be > 1-32, and 33-64 in the > output groupings with probably a common anode, so > any X-Y approach will > require (admittedly simple) decoding. > > Another benefit of the parallel port is that the > spacers who want this can > put together large files of random patterns which > could be printed out and > display various shapes or patterns at their leisure. > The parallel port, IIRC > also has a 'ready for next character' type control, > which alleviates the need > for buffering serial info. > > Was it Mircea Coman who wrote on Wednesday 25 > September 2002 09:33: > > Hello Declan, > > > > If you can�t use 8x8 matrix control, then a serial > > approach it�s the way to go. It�s a good idea to > use > > PC for remote control and has the advantage of > > flexibility and spare you the effort of building a > > remote transmitter. If I remember correct I saw > this > > in Electronique Pratique magazine. They use a > simple > > long serial register with a lot of parallel > outputs. > > I�ll check this article when I get home if you are > > interested. > > > > Regards, > > Mircea Coman > > > > --- Declan Moriarty <[EMAIL PROTECTED]> > wrote: > > > I have a need to switch a 64 way exhibition > piece in > > > an 8 x 8 matrix. We are > > > farting about here to impress. The output stage > I > > > can manage. It's the > > > control strategy I am wondering about. Due to > design > > > considerations I cannot > > > multiplex outputs, so driving with 16 switches > (8 > > > columns and 8 rows) isn't > > > practical . > > > > > > It has to be controllable by a demonstrator, and > > > they're not printing > > > characters or any standard shape; what is wanted > is > > > an efficient and humanly > > > usable interface to address these. I looked at > > > remote control ics, but the > > > interface is too well integrated into a tv. > Ditto > > > serial connections. I > > > haven't multiplied out the combinations, but it > is > > > daunting(zillions). There > > > will be a pic(16f877) based pcb I can attack and > > > alter if needs be, but my > > > coding skills are primitive. Mind you, the > pic16f877 > > > isn't. > > > > > > The very basic would be addressing the cells > > > individually via a pc & serial > > > port. Anyone got a better plan? > > > > > > > > > -- > > > Regards, > > > > > > > > > Declan Moriarty > > > > > > > > > > > > > > > Applied Researches - Ireland's Foremost > Electronic > > > Hardware Genius > > > > > > A Slightly Serious(TM) Company > > > > > > Experience is like a comb, > > > that Life gives you - AFTER all your hair has > fallen > > > out! > > > -- > > > Author: Declan Moriarty > > > INET: [EMAIL PROTECTED] > > > > > > Fat City Network Services -- 858-538-5051 > > > http://www.fatcity.com > > > San Diego, California -- Mailing list and > web > > > hosting services > > > > > --------------------------------------------------------------------- > > > > > To REMOVE yourself from this mailing list, send > an > > > E-Mail message > > > to: [EMAIL PROTECTED] (note EXACT spelling of > > > 'ListGuru') and in > > > the message BODY, include a line containing: > UNSUB > > > CHIPDIR-L > > > (or the name of mailing list you want to be > removed > > > from). You may > > > also send the HELP command for other information > > > (like subscribing). > > > > __________________________________________________ > > Do you Yahoo!? > > New DSL Internet Access from SBC & Yahoo! > > http://sbc.yahoo.com > > -- > Regards, > > > Declan Moriarty > > > > > Applied Researches - Ireland's Foremost Electronic > Hardware Genius > > A Slightly Serious(TM) Company > > Experience is like a comb, > that Life gives you - AFTER all your hair has fallen > out! > -- > Author: Declan Moriarty > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 > http://www.fatcity.com > San Diego, California -- Mailing list and web > hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an > E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > the message BODY, include a line containing: UNSUB > CHIPDIR-L > (or the name of mailing list you want to be removed > from). You may > also send the HELP command for other information > (like subscribing). __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com -- Author: Mircea Coman INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
