The 16F877 is quite an overkill for this, but still, as there is no mas production involved, it�s quite a simple thing to do. What you need is a keyboard from 0 to 9, to punch in the desired number, so you get one-of-X and one-of-Y outputs activated.
Is that what you need ? To program this it takes like 2 hours ? Could you get the hex code into the PIC ? Cheers Friedel At 09:18 a.m. 24/09/02 -0800, you 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). -- Author: Friedel Bruening 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).
