F103 Wideband Controller

[Dron_Gus]

Finally arrived.
Some issue with fitment. Thanks to plastic enclosure you just need to push it harder. Acceptable result for development with no enclosure on hands.

[Dron_Gus]

Some progress.

Screenshot from 2022-05-30 01-11-16.png (332.9 KiB) Viewed 3731 times

TS now can read livedata from 1f_rev2 wideband.
Next step is settings.

PS communication is over UART 115200. Next step is CAN.

[AndreyB]

Fresh rev3 hardware

now targeting 26 pin small square case
now with some spare digital inputs
now using 64 pin F103

image.png (177.56 KiB) Viewed 3302 times

https://github.com/rusefi/rusefi-hardware/tree/main/wideband-F103

[AndreyB]

DAC output works! Next step to merge the DAC code into official repo and fix PCB dimentions.

[joaodh]

It's getting really interesting. Unfortunately I have 5 boards to assembly with rev2. But you are already in rev3 .

I think I will wait until the things be more stable. Also the stm32 mcu seems be out of stock. On this board do you use a Chinese version?

[AndreyB]

stm32/gd32 questions is now clarified on https://github.com/rusefi/rusefi-hardware/blob/main/wideband-F103/readme.md my boards are a mix depending on what was available at time of order.

Also added a link to rev2 firmware binaries.

At the moment I am not sure if I will be ordering rev 4 on Tuesday or much later, overall this F103 is very much in the air.

[joaodh]

stm32/gd32 questions is now clarified on https://github.com/rusefi/rusefi-hardware/blob/main/wideband-F103/readme.md my boards are a mix depending on what was available at time of order.

Also added a link to rev2 firmware binaries.

At the moment I am not sure if I will be ordering rev 4 on Tuesday or much later, overall this F103 is very much in the air.

I have bought today two gd32f103. I will assembly the rev0.2 to see if works properly. I have also with me two ch32f103 do you think that will be possible make this one works also?

[AndreyB]

No plans for ch32f103 sorry, each extra chip is huge amount of effort.

[joaodh]

No plans for ch32f103 sorry, each extra chip is huge amount of effort.

Will take time to receive the GD32. I have have spare boards let's see if I can make CH32 works

[AndreyB]

It takes time https://github.com/mck1117/wideband/pull/164 15 days so far no feedback no merge

[AndreyB]

Nissan uses 4 wire "middle band" sensors, do these have anything in common with our WBO logic?

image.png (115.78 KiB) Viewed 2108 times

https://github.com/rusefi/wideband/issues/12

[mck1117]

Nissan uses 4 wire "middle band" sensors,

I got one to work here: https://rusefi.com/forum/viewtopic.php?p=43610#p43610

do these have anything in common with our WBO logic?

Nope, they're basically just "source voltage and measure current" type devices, no active control really needed.

[Zeiss]

@Dron_Gu: Which enclosure is this? It looks very nice
Thank you!

[Dron_Gus]

@Dron_Gu: Which enclosure is this? It looks very nice
Thank you!

Plastic one is https://sl.aliexpress.ru/p?key=OokNx3z

[Dron_Gus]

But with slight modification (planned for V2) should also fit into https://aliexpress.ru/item/4000811747039.html

[Zeiss]

Thank you very much

[Timbelom]

Stock ECU
hard wired to battery
quick engine restarts seem to have a problem:
on engine cranking controller seems to go into heating mode where it takes a while to re-heat what is supposed to be a hot sensor

[Dron_Gus]

Battery voltage drops down to 8.53V (actually seems even lower) during cranking. This cause controller to switch to SensorNoHeatSupply state and after battery voltage rises above 9.5 - start heating from the beginning.
https://github.com/dron0gus/wideband/blob/master/firmware/wideband_config.h#L55

Screenshot from 2023-03-21 21-14-22.png (40.96 KiB) Viewed 988 times

[AndreyB]

LSU adv five wire pinout

Something like 2017-2019 Audi A4 Upstream Front Oxygen Lambda Sensor 8R0906262 8R0906262E would be the sensor