2008 Nissan Quest Van with Tesla SDU.

Tell us about the project you do with the open inverter
PetersonOctavius
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by PetersonOctavius »

Proton wrote: Thu May 15, 2025 1:52 am 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
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by Proton »

PetersonOctavius wrote: Thu May 15, 2025 2:02 am 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.
photo_2025-05-14_22-16-56.jpg
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.
photo_2025-05-14_22-17-04.jpg
photo_2025-05-14_22-17-20.jpg
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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.
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by Proton »

PetersonOctavius wrote: Thu May 15, 2025 2:26 am 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.
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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/
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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?
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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.
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Re: 2008 Nissan Quest Van with Tesla SDU.

Post by 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
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