With the above established I want to return to the original questions and the (partly premature) conclusions. So we start with a perfectly working car and a terminal class that remained largely unchanged for years. After fixing a completely unrelated problem with the battery the VCU starts to do spu...

Alright, more changes. Now I no longer managed to lockup the terminal or entire processor. The USART has an overrun flag and apparently while that is active it no longer accepts data. So now I a) disable the RX DMA while running a command - that stops the watchdog reset b) reset the resulting overru...

I have added an echo 0|1 command now and also allow turning off echo in the constructor. So now for the car project I turn it off by default. Upcoming versions of the ESP firmware can turn it off via the command https://github.com/jsphuebner/libopeninv/commit/df951cc1b7fae2dd483429b873bcbbe838746db2...

Reboot problem solved: viewtopic.php?t=4925

Today I found 90% of the cause of an issue that has been plaguing me for months now. I had random reboots of my VCU mid drive. Read up on the whole story here: https://openinverter.org/forum/viewtopic.php?p=66887&hilit=reset#p66887 Lately I had the VCU restart during charging but there was one i...

Congratulations :) (to finishing of course) I don't think the Tesla inverter took damage as it has reverse polarity protection, both the logic board and the power board. EDIT (after watching the video): Do you have a solid ground connection to the inverter? The contactors will pull a surge from grou...

Interesting. Yes the large outputs chokes point to an inverter

I doubt this is from any vehicle. Open frame with fans doesn't play too well in cars

If you're savvy it's easy to rig this up by extracting the buck/boost stage from a Prius Gen2 inverter. As an invariant the additional pack must always have a higher voltage than the installed pack so it can sit at the boost side of the converter. That said for the rare use case it might be easier t...

Hi! was discussed before: viewtopic.php?f=9&t=4511

That's great
150A and no motion is pretty good, wouldn't even bother to get closer

No communication this time, undo last change... ppvariant is just relevant for calculating cable capacity for type 2 cables. Can't be the culprit. Have you checked your port contactors that they are not stuck? Iso resistance of port? Does CP measure fine seen from the port? Test also with ActuatorTe...

celeron55 wrote: ↑Sat Apr 13, 2024 8:00 pm Are all of the pins other than LOCK_MOT1 and LOCK_MOT2 referenced to ground?

Yes exactly. PE should be solidly connected to the chassis not far away from the charge port so that would serve as a ground reference for the signals

I guess the design is still young enough for shuffling pins

Via the A/C inverter it will just boost
Via MG1 it will just buck. You need an additional relay to connect the battery to the buck side while charging. At least then you don't need the extra current sensor because it will use the MG1 ones

So charging feature would work but not powering the dcdc converter while driving.

Good news, I also bought one of those 2nd hand from someone who went a different way. So I have both hardwares. Is it version 1.3? Early versions don't have the user PWM connection. Stupid question, how does it know whether it's in charge mode, and is charge mode also what happens during regen? Bec...

The booster is limited to 100A, so this will get you 10 kW

The order has gone through now, I'm excited! On another note I wanted your input on this. Here is the current pinout: focci_pinout.jpg The two contactor outputs are on different plugs. The LEDs and button are not on the plug that is more charge port oriented but on the car oriented one. Now I though...

Also, does any of what you described require using new pins or telling the buck/boost what to do? Any code or software? Or does it just happen by being connected? Sorry, just found this. With the SMT version of the Prius controller this is integrated. In drive mode the "user PWM" pin runs...

I like to use my cheap Chinese grid tie inverter

screen capture would help. Is it the new "green" interface or the old "white" one?

Yes I see it now and no that will not cause an issue

Yes indeed. It's 28€ just for the QCA chip and like 20€ for the remaining board :) Order went wrong. Went through till payment, then suddenly jumped to order history. Cart and history empty :( Couldn't start over because the QCAs are now stuck in the zombie order. Meh, they'll figure it out. I have ...

Veeery nice! Udo will like that.
I think you have the book, right?

Maybe you can be somewhat compatible? But don't want to restrict you Attached some notes also, but the table from the book is more up to date

Very tidy install and great re-use factor!
Are you using the stock battery-to-drivestack cable as well?