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Discussion Starter #1
Partical is a company that makes bt/wifi/cellular connected IoT devices https://www.particle.io/. This is extremely handy, since you can easily issue cloud commands that are then forward to the device to do things. Well somebody wired one of these handy devices to a car's ODB II... and I think you see where I am going with this.

https://store.carloop.io/

I'm going to buy one of these and see if it can't pull Volt data like battery status. This looks like a really helpful device so was curious if anybody is already messing with these or are interested in doing so.
 

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Discussion Starter #4
mygreenvolt.com integration would be great, love that app. That project is entirely written for WiFi whereas particle probably would require some refactoring to get working.

Some early analysis of carloop.

It does not/can not read CAN messages from the secondary ODB II port in the passenger seat.
I have gotten errors while carloop is connected in the center dash, it will suddenly shut off power and/or say that the car has lost communication with the high voltage system. Also, car won't turn on and various security warnings, these may be because I have the doors open.
 

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Discussion Starter #5
I'm reading SOC ( never shows up in car chatter) ambient temp and engine runtime. The last two get passed a lot.

Things seem to work however the car appears to lose communication with itself. I get check engine and reduced propulsion warnings among many other warnings. Car seems to run fine but occasionally loses the ability to read gas range.

Maybe particle is tapping the odb bus too often. It looks like the can communicates by sending the same status 10-20 times. Perhaps carloop is accepting all of those messages leaving out somebody else?


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Discussion Starter #6
Here's what reading State of Charge, Charger volts/amps, Outside temperature, and gas fuel levels look like in Blynk powered by Carloop.



Pulling too many different values too frequently will cause the car to lose communication with its own status systems. Also, it would be good to figure out the bottom end of SOC, so I can guess at battery percentage. I'm going to guess that the Guessometer looks at SOC and compares it to last Charge miles to get a guess at how many miles this charge will last. I have PIDs for those values, but haven't wired them up or attempted the math yet.

Fun project, now that it is all working!
 

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Discussion Starter #7
State of charge updates are erratic. Often taking a while to pull from the standard query pid. Here's a visualization of my car charging over 2 hours.



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