As royhen99 says, the open source VCU you are looking for is ZombieVerter. This works great with Leaf hardware as well as some others.

This does feel like the polarity was reversed at the inverter, or maybe you . Are you able to trace things through and determine if that's the case? If the current stopped, then presumably something in the circuit opened. If it wasn't the contactor, and it wasn't the fuse, then I can only assume the ...

Hello everyone!

I just wanted to update this thread with some important information as I get questions about this from time to time.

First of all, to give a little background, the best way to build a BMS to work with these batteries would be to design a PCB with a bq76PL455A chip and an STM32 ...

I did considerable work tuning the SDU. I posted a set of parameters here that I deemed to be a good safe starting point: https://openinverter.org/parameters/view.html?id=27

There is also another (I believe more aggressively tuned) version that posted here: https://openinverter.org/forum/viewtopic ...

Another milestone reached today. I ordered 10 QCA7005 chips to JLCPCBs factory and can now select it for assembly :)


This is fantastic news, and the price is perfectly reasonable considering the value of the finished board! Looking forward to seeing some "v1" boards.

:idea: :idea: :idea:

I love your (I assume 3D printed) light bulb test rig

Thx for the fast response and explanation.
So a async motor we don't use the foc, only for permanent magnet motors?


Correct. FOC is (probably) superior, but extremely difficult to implement on an async (induction) motors. Openinverter only supports FOC on permanent magnet motors. Don't worry ...

We've also got the chip serial which is unique


This sounds good. If we append the STM32 serial number to the 02:: prefix, we should get a nice unique and consistent address.


A) We decide we generate those for the users of focci. The easiest way (for now) is to use a local administered adress ...

Since we don't have a Vendor ID, the best way to generate a valid MAC address is to use a "locally administered" address.
For this to be valid, bit 0 of the first byte should be zero, to indicate a unicast address, and but 1 of the first byte should be one, to indicate locally administered. All ...

How does Zombieverter, in combination with SDU (or LDU), handle the overcurrent event when it is not aware of the tripmode (=1) setting of the OI board in the DU?

Zombie would not be aware of the error. It will simply leave the contactors closed until you turn the ignition key off. This is the ...

johu wrote: ↑Thu Jan 25, 2024 8:26 amI left PP dangling

Giggles.

Awesome work! Looks like it's filling up fast!

tom91 wrote: ↑Sun Nov 26, 2023 1:48 pm Zombie does not have EMC cert.

I was under the impression that Damien had the equipment necessary to certify this. I don't know if he's produced any documents though, and it may be a lot more complicated than doing a test and printing a certificate!

2. More irritating: The economy service does not populate the big elco anymore. They did the last time, but this time, they give the choice to either not populated it or switch to the expensive service. Any idea how to workaround this?
image.png


The short answer: don't use it. Use multiple ...

Which JLC part number has this inductor? I today changed from
https://jlcpcb.com/parts/componentSearch?searchTxt=C3000379 (which is 12.3 x 12.3mm)
to
https://jlcpcb.com/parts/componentSearch?searchTxt=C5127462 (11.5 x 10mm),
but this still looks bigger than the one in your screenshot, and we do ...

Usually a hardware failure would cause an immediate trip, excessive load under current seems like a configuration issue.
What hardware are you using, and what parameters?

Where do you guys source the QCA7005 chips?


Pretty sure the answer is Aliexpress. There are several sellers there offering them. However perhaps Uhi can point to a specific seller as I imagine it's a bit of a gamble what you'll actually get.
Maybe one day we get to the stage where it'll be ...

johu wrote: ↑Sat Nov 25, 2023 9:32 am One German customer has lost drive after it worked fine for 40.000 km and apparently he's not the only one.

That's a shame. Do you know the the nature of these failures, just randomly fried IGBTs?

As long as the motor is not spinning, and no throttle is applied (ideally in neutral) then it's safe to disconnect the HV.

You can turn off the HV first, or the HV and LV simultaneously.

Wifi is disconnecting every now and then .. sometimes parameters won't seem so show up to web interface and might take a long time to appear.


This is annoying but totally normal on many older openinverter boards. I've had these problems on most boards I've used (though I think the latest boards ...

If I'm understanding correctly, the program already exists.

I know you said you don't have much time, but I'd say loading an existing program onto an Arduino is extremely easy. I would strongly suggest that you at least try. The page you linked provides a program that will do this.

uhi22 wrote: ↑Fri Oct 20, 2023 8:52 pm Very good. But really for the esp32-web-interface?

Yeah, I definitely opened that in the wrong project! Fixed now

I've created an issue for another frequently requested feature - dead-zone free regen throttle mapping: https://github.com/jsphuebner/stm32-sine/issues/38

Please could we create some tags to properly label "feature requests" and "bugs"?

I've created a Github issue to track this feature request: https://github.com/jsphuebner/stm32-sine/issues/38

One nice thing about making regen proportional to speed is that as well as eliminating the deadzone, it also replaces brkrampstr.
Please see my old thread and patch here: viewtopic.php?p=42509