Alexander Stephen Thomas Ross wrote:
> Make it future proof by using the smaller rhombus-tech.net EOMA-CF
> compact flash sized card.

Short of building it out of very large chunks of rock, there's
nothing future-proof :-)

I think EOMA/CF and a device like the Nanonote go in different
directions. EOMA/CF looks like a good choice for people who don't
want to mess with highly integrated electronics, who have only
a small number of peripherals, and who don't need a high degree
of customization.

For example, if you're making a robot and just need a "brain" for
connectivity and to talk to your power electronics, EOMA/CF could
be a good choice, since it would come completely built and tested.

However, a system like the Nanonote is designed around the SoC,
and the circuit is arranged to fit a non-trivial mechanical design.

The EOMA/CF module would not be a good fit in that regard:

- there are very few I/Os, barely enough for a keyboard,
- has interfaces useless for such a device (SATA, Ethernet, etc.),
- lacks essential ones like audio or MMC,
- the LVDS interface doesn't look as if it could talk directly to
  a low-cost LCM,
- with everything being in one block, layout is very constrained,
- and there are several connectors integrated in that module, so
  you'd also heavily constrain their placement, the placement of
  the module, and get worse overall mechanical characteristics.

For anyone building a Nanonote-class device, a potential reuse of
the EOMA work could be the electrical design and of course the
drivers, though. EOMA could be a good base for that also because
it shares similar goals for driver openness.

- Werner

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