AVR-Chat

--- In AVR-Chat@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
> On Fri, 18 Feb 2005 16:49:29 -0000, Dave Mucha <dave_mucha@y...>  
> wrote:
> 
> >
> > It would be that one part would be connected to another of about 
40
> > possible combinatoins, and only if it is correct would the thing
> > work.  say, light an LED or something.
> > I'm thinking when the two parts meet, they both light an LED to
> > indicate the correct two were connected.
> 
> 
> In exactly which form do they "mate"? ;-)
> Do they have contacts or connectors of some sort?
> 
> Have you cosidered using DBx connectors and simply wiring different 
pins?
> 
> ST

The mating would be by being next to each other.  maybe a contact 
type connection, but not plugs or any type of protruding contacts.

Think of a deck of cards that would be flat and need to touch to be 
identified.  (really close is fine)   alignement is fine if an opto 
sensor were to be used.  ie: serial handshaking.    RF is not desired.

Dave