Okay, let's say you flash the inverter. What next? All the interest lies in the immobilizer.


At least for now, I'm not particularly interested in that. The PCS is the main thing I'd like to get going since it's a commodity piece of hardware for charging + DCDC conversion but has big variances ...

Okay, you've written a script. How do you decide what exactly to flash?


I remotely connected to a 2017 Tesla Model 3 that's been updated to the latest firmware from Tesla. I used the secure shell in service mode to see what firmware options were already downloaded onto it. In the `deploy/seed ...

For anyone who has tried reverse engineering Tesla parts, one of the biggest headaches is CAN messages changing from one revision of firmware to another.

I wanted to try flashing more uniform firmware on devices to reduce some of those headaches. Thankfully, all of the Tesla ECUs support flashing ...

I think I've found what's going on with newer PCS firmware:

Since Tesla introduced the 16V battery, they changed up the messaging significantly to/from the PCS. Up until now, communication for the DCDC + Low Voltage charging happened with the vcFront_SystemStatus (0x3a1) message.

Now, it's been ...

Finally got access to a Tesla Model 3 to log against. I've resolved the `PCS_a031_uiMia` and `PCS_a030_canRationality` messages. They've added an extra byte to CAN message 0x333. I've also found two variants of the 0x2B4 Message that provide LV voltage on newer firmware and have it parsing properly ...

What I've found works well in my day job of seeing up the code principles ahead of time manually and having a good set of rules in Claude.md to provide in repeatable rules in its context for how to interact with your codebase. I want to do another pass having learned from this one to see if I can do ...

Yeah, I'm going to take a new pass at it. It might be re-writing it, I'm not sure. It's functional but yeah, poor on legibility for contribution because of Claude. I'll see, I haven't had too much time lately, but I'm hoping to dig back into it soon to figure that out.

Did you even build and test the Canlite environment?

Debug Env was not able to compile because of an sdk .h file missing . Changing the flash method fixed it. Then no Wi-Fi in AP mode visible. Changed to release mode. Was not compilable . Had to change the configs in platform.ini . Now I get ...

Maybe someone with one of the new boards could help out? It just needs a $10 Saleae Logic USB logica analyzer clone from ebay, aliexpress, etc and a little bit of soldering. It would also be helpful to get a fresh LIN capture from a newer board too. This would help unlock the newer "Model Y" pump ...

Hi @outlandnish,

This is beautiful work, so much so I had to use your ideas in my own re-imagining of the use of the ESP32!

But I ended up with a very different architecture, based on a few observations:

There are many other projects related to OpenInverter that expose a configuration ...

Absolute impressive what you did. I will give it a try as soon as possible. Just read 1,5h through your repository and the others. Amazing style of coding and also how you use ai. For me so many things to learn. I fear most of openinverter Forum members will have a hard time to understand what you ...

Here's a photo of serial/part number:
A quick note: I am now able to turn on DC-DC converter using Arduino Due code that Damien has provided. I am receiving error code 24-VCFront. I had many more errors in the beginning which I resolved except for this one. I could not find any DBC file that ...

Thanks for the link. Here's the list of model-3 DBCs that I have found so far. They don't include message 0x424, but I am leaving them here in case someone finds them useful:
https://github.com/onyx-m2/onyx-m2-dbc/blob/main/tesla_model3.dbc
https://github.com/joshwardell/model3dbc
https://brianman ...

OK thanks.

Hoping to check it out later today, could be some loose joints or stray solder, but I think I may know the issue, and it's dumb. I cleaned out the through holes for the capacitors with a tiny drill bit (my soldering iron and desoldering tool were having a hard time), and it may have ...

wow,

i was actually actively working on this for my systems. your new interface takes the cake. it covers everything i thought off. including the one shot can message.


thank you for working this out. i will flash it and test it on my systems and some of my new designs.

thanks tons again ...

Thanks!

Fixed some big issues with loading / updating parameters after a refactor. Updates are live

I *accidentally* created a fork of the esp32 web interface for Open Inverter. It started off with just the goal to improve the UI a bit, but I ended up expanding to a lot more than that as I thought out my user experience a bit more. Suddenly, I had a new project :oops:

This project was also an ...

Noted re: the regen - that would do it! I'll wait to enable that - gotta get my HV pack all setup with my fun new Taycan module BMS + HV system.

Re: firmware - yep, this was on the latest firmware. It was a good test of my redone web interface to be able to do firmware updates :)

Thanks for ...

There was a little solder blob that I found on one of the components near the Phase A High gate driver. It must've been a remnant from removing the board the second time for some fixes.

The motor spins - yay!

Interestingly, it doesn't *stop* spinning even after releasing the accelerator pedal. But at least it's rotating :) EDIT: it just takes a really long time to respond to the pedal being released. It does eventually slow which sounds like some tuning to get it right.

Thanks ...

Sounds good, I'll take a look! I have the inverter mounted in the motor so I can't see the fault LED. I'll rig up a setup similar to yours so I can test it with it outside of the motor to inspect that.

The Throttle and Desat errors are most likely not related to each other. Is the M3 throttle pedal a dual pot throttle? If not you might have set the throttle mode incorrectly or the throttle ranges are not calibrated correctly.

Please always attach the parameters to any post related to errors ...

I finally had a chance to revisit testing the motor. Here's where I'm currently stuck:

The setup:
OEM harness for the 30 pin connector + oil pump
"HV" Power supply currently set at 42V / 5A output
14.2V supplied to power up the inverter
A Canipulator ESP32-C6 running a heavily modified version of ...

Just FYI the Datasheet for the MC33771C is no longer NDA.

https://www.nxp.com/docs/en/data-sheet/MC33771C.pdf

From the Revision History of the Datasheet
MC33771C v.7.0 16 July 2024• Product data sheet
• Supersedes MC33771C v.6.0
• Updated status from confidential to public


Heads up that the ...

Updated pin out: