Re: Positional/physical addressing

On 6/25/2025 1:35 PM, Dennis wrote:

On 6/25/25 14:41, Don Y wrote:
 

>
I am increasingly convinced that I need to just see if I can
find a (dirt cheap) MCU with built in (factory) serial number
and incrementally poll for S/Ns during network discovery.
Having the *factory* (manufacturer) guarantee the uniqueness
of these identifiers means I'd never have to worry about
duplicates or assigning identifiers, etc.

 Like the one wire DS2401 digital serial number?

Yes, but that's an additional component.  These need to be *really*
small.  No larger than a ~.38 calibre shell.  Ideally, similar to an
old "data light" indicator.  The size of a braille cell is probably
the smallest that is practical (though obviously smaller size features
can be recognized)
Imagine how large a few hundred, individually identifiable, would be.
Then, a tenfold increase.
You can "zoom" a visual display to expose more detail but not a
tactile/mechanical one.