Wideband Controller: Fully Custom, no ASIC!

[pkagiantas]

so i got 5 of them made https://github.com/mck1117/wideband/tree/master/hardware/board_module/export/rev%20B
but im stuck with the firmware im not able to find the binary for the modules in order to upload it on them am i missing something ? or i am that blind ?

[AndreyB]

Looks like https://github.com/mck1117/wideband/ was not intended to be a "retail" product with documentation? I could be wrong.

If you click at https://github.com/mck1117/wideband/actions and select a recent master build you would get binaries as Artifacts of github action build. Clearly that's not an ideal user experience but that's what it is with https://github.com/mck1117/wideband

[pkagiantas]

the best i managed to to is to get an error from stm qube

22:16:51 : Download in Progress:
22:16:52 : Error: Write failed at address: 0x8001800
22:16:52 : Error: failed to download Segment[0]
22:16:52 : Error: failed to download the File


and the wideband flashes the leds quickly when powered up and then flashes them slowly
https://www.youtube.com/shorts/VrMK9l9kD1c
no idea what im doing wrong

[pkagiantas]

so... with an stlink it uploads fine and it works ... no idea why it wont work via DFU

[NickZ]

any chance of a .bin file for this firmware, Im not a coder and can't get it to compile even watching 100 videos on how to do it, all I get is it can't find the directories after it does the bootloader section.

[mck1117]

any chance of a .bin file for this firmware, Im not a coder and can't get it to compile even watching 100 videos on how to do it, all I get is it can't find the directories after it does the bootloader section.

It used to be checked in to the repo, but then we removed it and I forgot to upload a release instead. Here you go:

https://github.com/mck1117/wideband/releases/tag/first-release

[NickZ]

thank you for the bin file.
My next question (and ive read the thread 10+ times and BOM) I can't find the part number for the 12 pin carrier board connector anywhere.
Can someone please tell me the part number.

[AndreyB]

Can someone please tell me the part number.

I am looking at https://github.com/mck1117/wideband/tree/master/hardware/board_carrier/mx120.pretty and thinking 367831201 MX120G

I totally agree it's not user friendly at all I assume it was not intended to be user friendly, I could be wrong.

[AndreyB]

Excited to see progress towards unit tests!

[NickZ]

This is my first unit complete and tested, Basically followed instructions and got it running.
Bench testing free air sits at approx 17 afr, shouldn't it be higher?
with the lighter gas will drop to 13 afr and removing the gas will slowly climb and suddenly hit 20 afr and then dop back to 17 afr.
After about 3-4 minutes it will shut down with overheat error, its done that 2 times on each test, is that maybe not having exhaust gasses flowing over it? the sensor was not hot enough to burn me, but warm.

20230724_174625.jpg (3.07 MiB) Viewed 2731 times

[NickZ]

Is it possible to get the can address and position of the Lambda data.
Reading through this thread AEM X series protocol was used.
but the AEM output on a different CAN ID address 394 if im correct.
Im seeing ID of 400 and 401 on this unit.
also the aem is buffer 0-1
Im not seeing valid data on that CAN position either.
I am seeing lots of data but not much of it makes any sense.
As im not a CANBUS expert and im slowly finding my way through it.
So if someone could help me please with Address ID, Position of the Lambda data and maybe even the conversion that would be great.
I have worked out the addresses and data for the heater control to turn on and off.

[mck1117]

I’ll add a DBC to the GitHub repo. It no longer uses the AEM protocol as it had some limitations.

[mck1117]

Here you go: https://github.com/mck1117/wideband/blob/master/wideband-can.dbc

Contains both the data the controller sends, and the enable/battery voltage bits from the ECU to control it.