There are "NeighborSolicitation" and DHCP messages, maybe these confuse the Audi?


that reminds me of something where the initial communication would work with the Tesla, but would abort after a few seconds. I remember it was some multicast message (alas I don't have the logs anymore), but in my ...

not this cape in particular, but it would have made it much much easier for more details read through the other thread: https://openinverter.org/forum/viewtopic.php?t=3551

according to this description, the i3 has been modified for this project: https://www.ffe.de/veroeffentlichungen/ ... bmw-i3-um/

that said, if you live somewhat close to Linz in Austria you are welcome to test your i3 with my DIY DC wallbox

johu wrote: ↑Tue Dec 30, 2025 9:36 pmI provided some voltage at the beginning of CableCheck (should be about 200V) [...]

That seems odd to me. Why do you provide any voltage during CableCheck?

I had a Peugeot E-2008 owner over. There is a wide spread issue on this Stellantis platform that the onboard charger dies, so his main interest is to build a cheap DC charger at home. While the PLC communication worked right away (it offers din:70121 and iso:15118:2), we didn't manage to get pass ...

Based on the VIN decoding, my 2021 Tesla Model Y was produced in California, USA. I ran it continuously at 3kW for 8 hours.

Very interesting! To be honest I didn't expect that; if anything, I would expect that Tesla got stricter with their limits. In your last picture I see that (1) your driver ...

thanks for the report! I'd really love to see if you see the 15Ah discharge limit too, and if so, I'm curious how the adapter deals with it.

Hello, regarding whether Tesla will cut off your power supply and report a fault, are there any new updates? I heard that entering the maintenance mode can avoid such issues. Maybe you can give it a try.
Good luck! :)

Thanks, that's worth an experiment. However service mode (I guess that's what ...

I'm not familiar with the miniEVSE hardware. I posted about my setup earlier in this thread:

Regarding the step-up converter, I followed the mod described here: https://github.com/dalathegreat/Battery-Emulator/wiki/High-Voltage-source
And have a little calibration script to figure out good ...

I can't quite make out the y-axis in the video, but it's weird to me that it jumps between three voltages (I assume 12V, 9V, 6V?).

Once you plug in, you should see 9V aka. state B immediately. Then the PLC communication starts and quite some communication should happen until you see a transition to ...

Welcome PLSee!

I don't see anything obvious, just some thoughts:
please share the pcap file, it's richer in details
did you check the service menu of your tesla? sometimes error messages give clues what could be wrong
did you patch the EVSE bits accordingly?
what exact plc modem are you ...

would love to talk about V2x and meet up, alas that weekend doesn't work for me

But before getting into that rabbit hole I'll try to replace the TPlink TL-PA4010P v2.3 that I'm currently using with a v5.0 and hope that the higher version number implies higher reliability :mrgreen:

I did that a few days after I've posted that and with v5.0 I did not get a single timeout ...

but you're living in the range of my ID.5 (approx. 160 km), and maybe we should try my ID.5 on your DC Wallbox. :D

that would be interesting :) send me a PM or find me otherwise on the internet (using the same nickname).


Unfortunately I didn't find a cable with a shielded CP inside a cable ...

(Sorry for posting charger related stuff in the other thread: https://openinverter.org/forum/viewtopic.php?p=79001#p79001 )

For completness, also mentioning it here: To apply a HV voltage to the DC lines, I use this modded step-up converter: https://github.com/dalathegreat/Battery-Emulator/wiki ...

It's on my list to check if any differences in the messages pyPLC sends avoids the heating,

So from the logs of this V2L device that was discussed, it appears that it sends EVSEMaximumPowerLimit with 480kW. In the OpenV2G fork that is used for pyPLC, this value is hard coded to 10kW. For testing ...

Looks like the Teslas 15Ah limit can be worked-around by pretending a charge current while actually discharging: https://openinverter.org/forum/viewtopic.php?p=78883#p78883

Alas nope, there was a follow-up: https://teslamotorsclub.com/tmc/threads/teslaunch-north-americas-first-v2l-discharge ...

Some setback on my side. For context, my current setup looks like this: (1) RaspberryPi with pyPLC running (hooked up via WiFi to the local network), (2) an ESP32 running the battery emulator code for communication with the inverter via RS485 and also controls some additional contactors (also hooked ...

The Kostal is even a very good Tip

No no no... please don't get a Kostal. Basically every other inverter has a ModBus or CAN interface, except for the Kostal, they implement a custom (undocumented) protocol over RS485, which isn't fully understood yet. There are some timing related things in the ...

Finally...
kostal-discharging.png
Convincing the Kostal inverter was trickier than expected. After some help by the Battery Emulator community I finally got it to work. There is also a ModBus register in the inverter where the current can be changed from -13A up to +13A. Both works :)


Just a ...

Let's make that ~70 minutes :)

The car sent a PowerDeliveryReq with "ReadyToChargeState": "0", and then a SessionStopReq, last lines of the log is attached.

Also the alerts in the service menu are very interesting. Seems to be the threshold is 15Ah of discharge.
Screenshot 2024-11-19 at 10.15.59 ...

I would expect, that the voltage of your step-up converter does not matter as soon as the precharge is finished.

That's what I initially tried, but it didn't work. I'm not sure anymore which is the right log for it... I'll redo the experiment and come back to you later this week.

My current ...

Quick update: I attached the 5V power supply to a relay of the Raspberry Pi I'm using, and came up with this quick hack: https://gist.github.com/lewurm/e994ae4d016beaa9b51b7455e465ca61

So basically the step-up converter gets enabled on the first PreChargeReq . And indeed, that makes the situation ...

That makes perfect sense, thank you!

I'll try to hook up a relay that enables the step-up converter at the right time. It provides the voltage pretty quickly, so maybe that's good enough timing wise.

Hopefully the "welded contactor" is just a false alarm.

Yeah, I'm a bit worried about the nature of this. I didn't mention it in my previous post, but initially I just had the step-up converter on the DC +/- lines, and once the contacters closed I switched the flip on the light bulbs (with HV ...