AVR-Chat

How about magnets on one side and reed switches or halleffect sensors 
on the other side?

JoeT




--- In AVR-Chat@yahoogroups.com, "Dave Mucha" <dave_mucha@y...> wrote:
> 
> --- 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