[Ovmsdev] v2 Basic Hardware

[William Petefish]

Looks good Mark. Love the tube style case.


My complex version is still a while out. (isn't alpha fun?) I am currently
working on the GSM side of things. I am trying to find a footprint for
Eagle as to the SIM908 module before I try to make one. If anyone knows of
such a footprint send me a message.

Specs on the current cape include:
2x CAN
1x ISO9141 (OBD K & L lines)
1x J1850
1x connector for GLCD w/ touch interface
(4.3"<http://www.sparkfun.com/products/11075>or
3.2" <http://www.sparkfun.com/products/10089>)

The BeagleBone has a USB host port that a mini WiFi adaptor would be able
to be fitted to.

I was also thinking instead of using a DB9 for the Diag on the modem I'd
use an FTDI cable. (or breakout
<http://www.sparkfun.com/products/9873>from Sparkfun.)

Thoughts/Concerns?

William

On Mon, Jul 2, 2012 at 7:43 PM, Mark Webb-Johnson <mark at webb-johnson.net>wrote:

>
> I thought you might be interested in seeing some early pictures of the
> prototypes for the vs basic hardware we've been working on with the China
> team.
>
> Some notes:
>
>
>    - The design uses a metal rectangular "tube" style case, customised
>    for us and cut to the width of our board. The case ends up about 7cm x 6cm.
>    Labelled end-plates will go on, with cut-outs for the various connectors.
>    The original design called for this to be black in colour, and we're still
>    deciding on that (as the silver doesn't look bad and will be mostly covered
>    with a black sticker anyway). Opening it involves removing the 4 screws on
>    one side and sliding it out.
>
>    - On one side we have the CAN (and power) DB9, GSM and GPS antennas.
>    On the other side we have the DIAG DB9 and expansion bus connectors.
>
>    - Holes for the LEDs are on the bottom of the case, and the LEDs
>    themselves are on the bottom of the board, so that they are as close to the
>    holes as possible.
>
>    - There are zero internal cables, and only one circuit board
>    containing the PIC controller and SIM908 modem - connection to the car is
>    via the main CAN DB9, using custom cables. We have tried to follow ODBII
>    standard pinouts  for that connector.
>
>    - For Tesla Roadster, we can use a custom 4 wire connector (Tesla DIAG
>    port connector on one end, DB9 female on the other). For ODBII cars, a
>    similar arrangement can be made.
>
>    - The SIM908 modem chip supports GPS for those cars that don't have it.
>
>
> Still early days, but the design looks workable and should be much easier
> to assemble and QC than the v1 modules. Rock solid and (probably) bullet
> proof. It should also have good support for cars other than the Tesla
> Roadster.
>
> Regards, Mark.
>
> P.S. I'm also working on a more advanced hardware solution, as a personal
> project, that may end up being offered. Just experimenting at the moment.
> William is also working on some solutions for this based on *bone hardware
> and shields. These are much longer term, and we'll send out more details
> when we have some progress.
>
>
>
>
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.teslaclub.hk
> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
>
>
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