Hi guys,

I've committed Jaluino PCB & schematic template for Eagle (see
http://code.google.com/p/jallib/source/browse/trunk/project/jaluino/schematics/jaluino_shield_template_eagle.zip).
>From this, I tried to create a shield that could act as a layer, an
intermediate, between Jaluino shields and Arduino shields. The idea is to
plug this intermediate shield onto Jaluino board, then plug an original
Arduino shield on top of this.

Attached are pictures of:

  - schematic: with mapping between Jaluino & Arduino pins. For PWM
channels, one is taken from RC2/CCP1, another is taken either from RC1/CCP2
or RB3/CCP2. RC1 and RB3 are multiplexed, so you can choose which of these
two pins will carry PWM. Using this approach, it may increase compatibility
(still only 2 PWM channels will be available, but for one, you can choose
where). As for analog pins, RA3/AN3 is mapped with AREF. Other mappings are
quite explicit. I'm open to suggestions !

  - PCB: the resulting PCB. Green aeras are considered as blue tracks (but
couldn't make them blue...). Quite a lot of vias, not that beautiful,
sorry...


Finally, I had a hard brainstorming (not just with myself this time), to
find a name for this shield: "Styx". So this is Jaluino "Styx" shield. Why ?
Well... Well in Greek Mythology, Styx is the river between Earth and
Underworld, a clear frontier between two worlds. I hope this illustrates as
good as possible the main purpose of this shield. Defining which part is
Earth, which part is Underworld in our case is left to readers' objectivity
:)


http://en.wikipedia.org/wiki/Styx for more...


[image: Dor%C3%A9_-_Styx.jpg]



Cheers,
Seb
--
Sébastien Lelong
http://www.sirloon.net
http://sirbot.org

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