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 2024-1...

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 workaro...

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 mu...

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 (wit...

Thank you uhi22! I indeed having some success here with this step-up converter: https://www.amazon.de/dp/ B07KG4RR74 I attached it to the 5V pin of the Raspberry Pi and adjusted it to output roughly 400V. When attaching the CCS plug it drops down to ~350V and the car was not happy with it. You could...

I managed to talk to a Tesla Model 3 2019 (EU). Alas it did not close the contactors, that is, I did not measure any voltage on the DC pins. pyPLC logs attached. The car also has a "hidden" service menu, with information about the HV state. Apparently it opened the positive contact for pre...

Just another "me too" report, that I was able to communicate with a Tesla Model 3 2019 (Europe) via pyPLC. My biggest hurdle was to get a proper 5% PWM signal on CP. Long story short, after I finally got my hands on an oscilloscope, it was clear that the opamp that I was using did not beha...

Can this MQTT backend be optional? I think it would be great to have it for future development (e.g. to communicate with the battery_emulator), but as uhi22 said, probably too intrusive to force it on everyone.

Another useful ingredient could be this: https://github.com/dalathegreat/Battery-Emulator