2008 Nissan Quest Van with Tesla SDU.

[PetersonOctavius]

Is in the screenshot above. It is 1 7 7. But at this point could this still be connector related? since the board can communicate with the other 2 chargers?

maybe, if you have a magnifying glass or an iphone with macro camera capabilities, you could take a closer look at the pads at the 24-pin connector

[Proton]

maybe, if you have a magnifying glass or an iphone with macro camera capabilities, you could take a closer look at the pads at the 24-pin connector

4 of the pads are really damaged not sure how I was even able to solder them. I had to add some thin wires because some pads pealed off.

Iphone ?? I will never own and iPhone under any circumstance. I de-googled all my androids since my first phone.

Still have my HTC dream.

[PetersonOctavius]

yeah, now that i see the picture, some pads are messed up.
are you able to trace where those pads should be connected? then you could solder a wire from the directly to another more accessible location.

[Proton]

yeah, now that i see the picture, some pads are messed up.
are you able to trace where those pads should be connected? then you could solder a wire from the directly to another more accessible location.

now that somewhat works I am not touching it again. All started because I did not have a new connector and flux paste. When I desoldered the original connector the pins got bent and had a hard time keeping them straight. And went south from there. From what I remember at that time I did not see the replacement part for the connector, and did no come with the board. the small connectors came with the board.

[PetersonOctavius]

understood!
you can get up to 6kW charging power with 2 modules, so its not that bad.
how big is your battery pack?
mine is 24kWh, i got 115-118km on a charge. i want more, im trying to teardown a model 3 battery to take 30-50kWh from it

[Proton]

My battery pack is about 41kw. 6kw should be enough. My house is on solar 100% and my inverter is only 8kW so I will not be able to charge with more than 2kW at home. I can charge with more when no big loads are running.
I am planning to upgrade to a 12kw inverter for the house.


This inverter is 12kW and is only $2500.

https://signaturesolar.com/eg4-12000xp- ... er-output/

[PetersonOctavius]

Fully on solar!! Nice
Here on the island i charge at home, max 3kW
I try to charge at the free stations when possible.

With the charging sorted out, what else you missing?

[Proton]

- I still have to adapt the Nissan connectors to the Toyota Prius Steering Wheel. This is the easy part. for lights , turn signal wipers etc.
Then I have to figure out how to setup the regen, I know Johu has a video on that.

- I have to find a way to monitor everything in the car. BMS and inverter data.

right now i have the inverter board and the BMS connected to the sam ESP 32 from Openinverter. I can connect and set them up both but once I turn the ignition key on I lose the connection to both inverter and BMS.
the car runs fine but I cannot monitor them.
this worked fine just connected to the inverter.

I have to find a way to monitor the battery charge % inside the car. This is maybe the most important.

I really want that high voltage hybrid inverter so I can charge the car from 120V/240V and also charge from solar panels on the car. for now that is expensive and heavy about 38kg and not sure can stay outside in the weather.

CSS charging is also on the list If I can find enough info on how to configure the Open inverter CSS board. Right now I still did not find any video showing and installation of the CSS board with some decent explanation.

[PetersonOctavius]

Gotcha!
For monitoring i have a 5inch nextion display with an ESP32 reading from the canbus and displaying on the nextion display.

I wrote a basic arduino code like :
If canbus available check for the id
If id is (for example) 0x1Dsend the value to the serial bus which is connected to the nextion dislay.

Current and voltage are being read straight from the isa shunt
Gear, tmphs, rpm are sent from the vcu (in your case that would be from your imverter board) via custom can mapping

[Proton]

I have to thank @PetersonOctavius for starting me and helping me on this project. I will open another separate thread to post the current files in case anybody wants to use them. they work for nextion 5" and 7" screens. both have a 800x480 displays. mine is the 7" version.
The screen still has the plastic on it so it is a little washed out.



This was done in Excel but if anybody is good at Photoshop, it can be made to look a lot better.

[Proton]

I am going to try to finish the CAN mapings for the motor. inverter, battery temperature temperature and RPM, next 2 days and then I will post the files.


I was trying for a new look in Photoshop but that is going to take a while.

[Proton]

For now, this are the parts used.

Nextion 7.0″ HMI Display Intelligent Series NX8048P070-011C

https://www.amazon.com/dp/B0B95VPVS9?re ... e_0_0&th=1



Can Controller

https://www.amazon.com/dp/B093WYRPL1?re ... asin_title



ESP32

https://www.aliexpress.us/item/32568066 ... pt=glo2usa

[Proton]

So..... I was doing the CAN mappings for the motor and inverter. I saved the mappings and turned off the car and turned it back on.

The screen was not showing the SOC anymore and the voltage was 309V instead of 369V.
2nd BMS was blinking slow and when I looked it is MUXSHORT...

[Proton]

Can mappings work for the inverter. at least first 2 and 4th. To test the other 3 and 5 I need to drive the car.
Now even if the BMS does not have the correct voltage for the battery, I am taking the battery voltage from the inverter (udc) and is showing the correct value of 369V.

I will post all files as they are, tonight after work.

[Proton]

I have posted all screen files here:

viewtopic.php?p=83450#p83450