Astra Dashboard

mrelliot69 · January 30, 2021, 12:52pm

Hi to eveyone,
I have a astra and i«m trying to build a digital dashboard .

I have some questions regarding how i should built it: to use the can protocol, i will have to set a permanent connection to the usb CAN Analyzer right? The live speed data is provided by this can analyzer?

Anyone already maped the xml for this car model?

Any help is welcome, thank you

realdashdev · January 30, 2021, 1:20pm

I think easiest way to start is to use normal OBD2 adapter to get you started. You get ‘most’ of the interesting data that way even when data update rate is much slower than CAN. Once you have developed your dash and everything works good with OBD2, you could start working with CAN as a continuation project.

mrelliot69 · January 30, 2021, 1:55pm

The thing is that then i would have to redo all the mapping for the can protocol so i prefer to start learning it so i can start understand how it works

realdashdev · January 30, 2021, 2:02pm

Sure, its also quite interesting to work on your vehicle CAN to see all sorts of data flying around. Good luck with your project. We’d be more that happy if you can share your XML file later on for other users.

mrelliot69 · January 30, 2021, 2:53pm

Yeas, i really like to learn more on who this works, and build the dash eheh. The can scanner is connected to what pins of the obd port?

realdashdev · January 30, 2021, 3:03pm

6 and 14. See image here:
https://obdsolaris.com/obd2-technology-definite-interpretation/

mrelliot69 · January 30, 2021, 6:35pm

Thanks for the help Jani , this can analyzer will have to be always connected to the odb port right? Another question that I have is how do I get the live speed? Is also by can protocol or realdash automatic detects it?

realdashdev · January 30, 2021, 7:04pm

Speed is for sure in CAN data. There is no automatic detection, you need to write a XML file that describes to RealDash the CAN frames and what data they contain. See documentation here:

https://github.com/janimm/RealDash-extras/tree/master/RealDash-CAN

mrelliot69 · January 30, 2021, 7:58pm

Thanks Jani , and the analyzer will have to be allways connected to the device right?

realdashdev · January 31, 2021, 8:24am

No sure what you mean, but always when you are reading the data for sure.

mrelliot69 · January 31, 2021, 11:18am

Sorry for not explain myself well. Ok what I mean is after I make the mapping of the values with the xml I will still have to have the can analyzer always on in order to the dash works

realdashdev · January 31, 2021, 1:39pm

Once the XML is imported to RealDash, it does remember the custom inputs defined in XML, so in that sense, no.