[Ovmsdev] GEVCU 5 hardware

[Kevin Sharpe]

The CINCH case is lovely and it looks as if it would be pretty easy to
produce hardware that is compatible with OVMS/GEVCU and bring out GPS, GSM,
and WiFi antennas on the rear panel leaving the exiting 30 pin connector for
I/O. Bluetooth would use an internal antenna.

I¹ll ask my colleagues to investigate the possibility of porting the OVMS
software to the AT915AM3X8E used on the Arduino DUE. I¹ll also look into
realistic build costs for the hardware.


Kevin Sharpe | Founder & Patron | Zero Carbon World is a UK Registered
Charity #1141347


From:  Mark Webb-Johnson <mark at webb-johnson.net>
Reply-To:  OVMS Developers <ovmsdev at lists.teslaclub.hk>
Date:  Thursday, 15 May 2014 13:13
To:  OVMS Developers <ovmsdev at lists.teslaclub.hk>
Subject:  Re: [Ovmsdev] GEVCU 5 hardware

Kevin,

Do you have anything on target pricing for GEVCU v3?

While there is some synergy between the two projects, when I looked at GEVCU
v2 last year, my three biggest concerns were:

1. I/O: GEVCU was more about digital I/O and PWM, while OVMS needs a bunch
of different comms options (mostly async).
2. 
3. 
4. Price: GEVCU retails for US$595 (vs US$99 for OVMS v2).
5. 
6. 
7. Power consumption: In general, units like GEVCU are designed to be on
when the car is driving or charging, and off at other times. Doing
telematics separately seems a sensible approach.

I was wondering about a hybrid approach. Some of the GSM units (like the
SIMCOM OVMS uses) can run user programs alongside the traditional modem and
have I/O. All the telematics could run on such a processor (always on) and
an I/O line could be used to wake up the GEVCU if required. But, such an
arrangement would be far from trivial and a stretch for a hobbyist approach.
A dual-processor, dual-firmware, system is much more complex to maintain and
keep up-to-date.

Regarding full linux boxes (like raspberry pi, beagle bone, etc), my concern
is power consumption. It would be wonderful to have a linux base, but the
overhead is horrendous.

Regards, Mark.

On 15 May, 2014, at 6:55 pm, Kevin Sharpe <kevin.sharpe at zerocarbonworld.org>
wrote:

> Hi Rob,
> 
> I¹ll send a complete GEVCU 5 hardware list when I get a moment. It¹s based on
> a Arduino Due architecture with a 84Mhz 32-bit microcontroller :-)
> 
> Here¹s a link to the enclosure which is IP67/69 (submersible!)
> 
> http://www.cinch.com/products/modular-integrated-connector-enclosure
> 
> <MODIce_enclosure.png>
> 
> 
> Kevin Sharpe | Founder & Patron | Zero Carbon World is a UK Registered Charity
> #1141347
> 
> 
> From:  Robert Sharpe <robert.sharpe at evergreen-consulting.co.uk>
> Reply-To:  OVMS Developers <ovmsdev at lists.teslaclub.hk>
> Date:  Thursday, 15 May 2014 11:31
> To:  OVMS Developers <ovmsdev at lists.teslaclub.hk>
> Subject:  Re: [Ovmsdev] GEVCU 5 hardware
> 
> Hi Kevin,
> 
> It seems sensible to assess the opportunity.
> 
> If someone more informed than me can list the relative features, potential and
> cost of the two units then that would put us in a better position to comment.
> 
> Regards,
> Rob
> 
> ---- On Thu, 15 May 2014 11:00:50 +0100 Kevin Sharpe
> <kevin.sharpe at zerocarbonworld.org> wrote ----
> 
>> Version 5 of the Generalised Electric Vehicle Control Unit (GEVCU) will
>> include BT, WiFi, and isolated I/O in a low cost and rugged automotive
>> enclosure. Many of the things on my OVMS wish list!
>> 
>> GEVCU development is progressing well and I¹ve suggested they add GPS as an
>> option in the final version;
>> 
>> https://groups.google.com/forum/#!forum/gevcu-development
>> 
>> Would their be any interest in porting OVMS to the GEVCU hardware? Or even in
>> merging the projects possibly?
>> 
>> I ask this because the more resources we can bring to the project the more
>> likely it is to flourish.
>> 
>> 
>> Kevin Sharpe | Founder & Patron | Zero Carbon World is a UK Registered
>> Charity #1141347
>>  _______________________________________________
>> OvmsDev mailing list
>> OvmsDev at lists.teslaclub.hk
>> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
> 
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