[Ovmsdev] OVMS v3

Michael Balzer dexter at expeedo.de
Tue Jun 17 16:24:09 HKT 2014

Regarding the display, only smartphones can possibly do the job. I got 
quite a lot comments from users saying it's good the OVMS can be used 
without a smartphone. Also I personally would like to have a dedicated 
fixed mounted display for the additional live info from the OVMS -- in 
fact that's why the Twizplay (www.twizplay.de) is so appealing.

Btw: the Twizplay uses an EA DOGM128-6 LCD module which can be 
controlled via SPI and costs around 11 Euro (1 pc). There's a touch 
panel option for this display available, not sure about getting the 
touch input via SPI though.

For the Samsung NX300, I thought that does 2-3 hours with active camera 
+ display + wifi. But I'm not certain about that, just read some 
consumer tests because of the hacking possibilities :-)


Am 17.06.2014 07:39, schrieb Mark Webb-Johnson:
> What I'm wondering is how valuable it would be to have a device in the 
> car capable of:
>   * logging can bus traffic to SD card
>   * logging can bus traffic remotely (over wifi, etc)
>   * Issuing CAN bus requests remotely
>   * Receiving firmware updates remotely
> And, what if that device was OVMS itself?
> I know that when I am developing for OVMS, I spend a tremendous amount 
> of time switching between OVMS and a CAN bus logger. Also, removing 
> OVMS to program it, and plugging it back in again. My lousy cellular 
> reception at home doesn't help (although has probably helped OVMS deal 
> with lousy cellular reception situations quite well). My ideal device 
> would be in the car always. It would allow me to log all traffic (or 
> selected traffic with an easy start/stop/trigger), and remotely 
> download those logs. It would allow me to make a change to the 
> firmware, remotely, and see the impact. The issue would be doing all 
> that while keeping security high as well as power consumption and 
> price low.
> Regarding the display, could this be bluetooth to an Android/iPhone? 
> Or, do we need a physical display? With most of the device nowadays, 
> adding a directly attached display is not too hard (and not too 
> expensive) so long as it is on ribbon cable less than perhaps 6" away. 
> But, if a remote display is required, that tends to drive up the price 
> dramatically. It seems that the CPUs nowadays can directly control a 
> display. But, if you want to run a remote display than you have to use 
> UART (or something like that) and then run a separate CPU in the 
> display itself.
> Regards, Mark.
> On 17 Jun, 2014, at 1:20 pm, Tom Saxton <tom at idleloop.com 
> <mailto:tom at idleloop.com>> wrote:
>> I think it's incredibly valuable to keep the $100 price point.
>> It seems to me that the hard part of adding support for other vehicles is
>> figuring out the CAN bus codes. That's ideally done with hardware
>> optimized for that task, which is probably not the OVMS device. 
>> There's so
>> much framework already in place that once you know how to read values and
>> issue commands, getting that into OVMS isn't that hard.
>> Making OVMS more expensive to better serve the developer community will
>> make it a harder buying decision for end users. Hopefully, we'll
>> eventually have thousands of users for every developer.
>> It would, of course, be an improvement to make firmware updates 
>> easier for
>> end users, that is an important issue.
>> I would like to see some sort of display, either on the box or remote, so
>> I can see SOC in the car without using a phone.
>>   Tom
>> -----Original Message-----
>> From: Lee Howard <lee.howard at mainpine.com 
>> <mailto:lee.howard at mainpine.com>>
>> Reply-To: OVMS Developers <ovmsdev at lists.teslaclub.hk 
>> <mailto:ovmsdev at lists.teslaclub.hk>>
>> Date: Monday, June 16, 2014 at 11:55 AM
>> To: OVMS Developers <ovmsdev at lists.teslaclub.hk 
>> <mailto:ovmsdev at lists.teslaclub.hk>>
>> Subject: Re: [Ovmsdev] OVMS v3
>>> I want to say "amen" to both Kevin's and Matt's comments.
>>> Right now it's really only fully useful for Roadster (and Model S)
>>> owners.  Volt/Ampera owners (and Leaf and Twizzy?) can remotely get a
>>> limited amount of incredibly useful information (like SOC), but the
>>> degree of control that the Roaster owners have isn't there (locking,
>>> unlocking, pre-heating/cooling, etc.).
>>> I intend to develop-in some of these features over time - at least for
>>> Volt/Ampera, and the only thing that has me not yet doing that is my
>>> need to get up-to-speed on the development environment and methods.
>>> However, even if all of the features available to Roadster owners were
>>> there for everyone, there is still so much more potential, as Kevin and
>>> Matt have said.
>>> If something isn't done to enable the expanded use then OVMS will
>>> continually only cater to a limited audience: one that wants access to
>>> various remote-control and remote-tracking features, but with limited
>>> local (in-car) usability and limited developer appeal.
>>> Thanks,
>>> Lee.
>>> -- 
>>> *Lee Howard*
>>> *Mainpine, Inc. Chief Technology Officer*
>>> Tel: +1 866 363 6680 | Fax: +1 360 462 8160
>>> lee.howard at mainpine.com <mailto:lee.howard at mainpine.com> | 
>>> www.mainpine.com <http://www.mainpine.com>
>>> _______________________________________________
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Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
Fon 0202 / 272 2201 * Handy 0176 / 206 989 26

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