Wideband Controller: Fully Custom, no ASIC!

[Lambo97]

That's good news, I purchased the 17323 would be nice to hear about that sensor.

[mck1117]

Does this apply to GD or does this apply to original 48 pad package ask?

probably both, but especially GD since the firmware is less compatible than a different F0

[SHOf429]

US $13.85 9%OFF | 10pcs/lot STM32F031 STM32F031K6T6 LQFP32
https://a.aliexpress.com/_mMRiurp

Could this be a substitute? Decent availability, at least for the moment. Cheap enough, too.

[mck1117]

US $13.85 9%OFF | 10pcs/lot STM32F031 STM32F031K6T6 LQFP32
https://a.aliexpress.com/_mMRiurp

Could this be a substitute? Decent availability, at least for the moment. Cheap enough, too.

IIRC the F031 doesn't have CAN.

[Simon@FutureProof]

But anyway there are no guarrantees that by the time you send your board to fabrication, these parts are still in stock.

Totally this, things seem to be in and out of stock on a daily basis. Predicting what is going to be available is becoming a gamble.

[hugovw1976]

Ok, time for updates! After some basic testing (idling in the driveway) of the first revision of the board, I ordered a batch of a second revision with some modifications to make it a small module instead of a development board:

image.png

left: USB programming adapter center: wideband controller module right: module installed on its carrier board

The carrier board has a 12-pin sealed connector, protected 5v regulator, and CAN interface chip.

Here's a snip of a log from the very first drive:

image.png

Channel "Lambda" (red) is an AEM X-Series inline controller, sniffing the right hand bank of the engine (even number cylinders).
Channel "Lambda 2" (green) is the new custom controller, sniffing the left hand bank of the engine (odd number cylinders).

The engine itself is a GM LS 5.3 liter V8. The Bosch sensors themselves are identical - but I don't expect the two banks of the engine to be perfectly identical. But they are always within a few percent, which is reflected by the log.

It certainly works! The PID loops for the pump control and heater both need some tuning (less bandwidth, mostly), and the output needs some better filtering. but it's a very promising start.

Tune and log are uploaded here and here.

How you set Tuner studio for dual wideband sensors, how you set wideband controller ID for dual sensors? Do you change ID direct in firmware before upload to board?

[mck1117]

I need to write that section for the wiki page at http://rusefi.com/s/wb

The short version is that there are "set ID 0" and "set ID 1" buttons in tunerstudio that will set the ID of all attached rusEFI wideband controllers. Plug in only the first controller, push the ID 0 button. Unplug that, plug in the second controller, push the ID 1 button.

[hugovw1976]

I need to write that section for the wiki page at http://rusefi.com/s/wb

The short version is that there are "set ID 0" and "set ID 1" buttons in tunerstudio that will set the ID of all attached rusEFI wideband controllers. Plug in only the first controller, push the ID 0 button. Unplug that, plug in the second controller, push the ID 1 button.

Thanks. One last question, wideband controllers connect to can1 or can2 on proteus.

[mck1117]

right now can2 is not fully implemented, so everything goes through CAN1

[AndreyB]

I am using eBay v2 ST-Link device.

I am able to flash Hellen WBO module using stm32cube but not using ST-Link utility 4.5

I've tried playing with different connect modes in ST-Link utility but no luck. Is that any sort of 042 magic or else?

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[mck1117]

Was the board powered via USB or no?

[AndreyB]

Was the board powered via USB or no?

Tried both ways, without USB power stm32cube does not connect always, with USB power stm32cube seems to connect more often.

Still did not work with USB power via ST-Link utility.

[vvk74]

Does the sensor matter for which fuel? i want to apply bosch 0 281 004 133 (lsu4.9) from a diesel mercedes

[mck1117]

Does the sensor matter for which fuel? i want to apply bosch 0 281 004 133 (lsu4.9) from a diesel mercedes

Shouldn't matter, no. AFAIK the diesel LSU4.9 has the same sensing element, but a different metal shroud to prevent soot buildup.

[AndreyB]

Poke poke hellen121vag is asking for 4.2 support

[AndreyB]

How does one assign which module is which on a Hellen board for instance when both are constantly powered on? Would we have to go by detecting disconnected sensor?

[mck1117]

How does one assign which module is which on a Hellen board for instance when both are constantly powered on? Would we have to go by detecting disconnected sensor?

https://rusefi.com/forum/viewtopic.php?p=40940#p40940

do we call this a "distributed double post"? are we cloud engineers now?

[AndreyB]

Hehe

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[AndreyB]

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[mck1117]

more info about hard-code selection at: https://github.com/mck1117/wideband/issues/11

[AndreyB]

I believe some real vehicle validation is happening? Looking forward some sweet log files

[Lambo97]

Wiring up the O2's to the Proteus. We touched on this earlier in the thread just want to confirm if my BOSCH 17323 doesn't have the Cal-resistor pin on the plug, just ignore and everything will be rosy?

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[mck1117]

It has the resistor. Look in the plug, there are 6 pins. That image is super confusing: it shows the _wires_ that leave the plug and go to the sensor (but who cares - they're between the sensor and captive plug!). The plug should still have 6 pins.

[mck1117]

This controller has now been embedded in to a handful of Hellen boards, which has uncovered some problems with the heater control. Apparently the wiring in the car I used to tune the heater PID is pretty junk - so the heater warmup is sort of lazy, which means for other people, it heats very quickly and overshoots the target temperature.

Here are two example of "good" warmup, one from a car (bold line) and one from a bench test running at 12 volts (lighter lines):

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And here's the same good in-car trace compared to a "bad" in-car trace:

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In the bad trace, the engine was started, so not only was the supply voltage ~2-3 volts higher (alternator charging!), there was some extra heat from the exhaust helping the sensor warm up.

Will update with a comparison once it's fixed and warming up nicely!

[hugovw1976]

Hi, I try to compile firmware and have a error, do you know what I'm doing wrong?

wideband_compile_error.png (41.02 KiB) Viewed 89332 times

I download the github files, and the kicad file don't mach with BOM and Zip Gerber files, the Kicad files have U3 REF3033 and BOM and Zip Gerber files don't. wich one is the latest?
Thanks.

[mck1117]

Hi, I try to compile firmware and have a error, do you know what I'm doing wrong?

It's looking for the bootloader to be built first, as the bootloader gets cooked in to the main firmware image. The most "bulletproof" way to build it is to use the build_wideband.sh script, found in the f0_module folder.

I download the github files, and the kicad file don't mach with BOM and Zip Gerber files, the Kicad files have U3 REF3033 and BOM and Zip Gerber files don't. wich one is the latest?

The gerber files/zip represent the last time the board was fabricated. The kicad in master has some edits that have never been fabricated - but have been validated as the module embedded in to Hellen boards. Provided that it passes ERC/DRC (which I think it should), the kicad in master should be fine.

[hugovw1976]

It's looking for the bootloader to be built first, as the bootloader gets cooked in to the main firmware image. The most "bulletproof" way to build it is to use the build_wideband.sh script, found in the f0_module folder.

Thanks for answer, I'm very new on STM32, how I build bootloader?

The gerber files/zip represent the last time the board was fabricated. The kicad in master has some edits that have never been fabricated - but have been validated as the module embedded in to Hellen boards. Provided that it passes ERC/DRC (which I think it should), the kicad in master should be fine.

Ok but the board of the zip file works find? or it's better the kicad board, I ask because I all ready order the board of the zip file, but still don't solder any part and I wonder if it's best the new board.

[mck1117]

Thanks for answer, I'm very new on STM32, how I build bootloader?

have a look in that script - it'll build the bootloader before building firmware, then combine them in to a single bin image

Ok but the board of the zip file works find? or it's better the kicad board, I ask because I all ready order the board of the zip file, but still don't solder any part and I wonder if it's best the new board.

The files in the export zip should be fine, yes. They aren't perfect but they work totally fine.

[AndreyB]

ST has provided some curious documents see https://translate.google.com/translate?sl=ru&tl=en&u=https://rusefi.com/forum/viewtopic.php?p%3D41832%23p41832

[hugovw1976]

have a look in that script - it'll build the bootloader before building firmware, then combine them in to a single bin image

Thanks, finally I compile firmware (still need to upload to a board and test)

The files in the export zip should be fine, yes. They aren't perfect but they work totally fine.

OK, but have some question, the board on export zip just have one jumper pad in back connected to pin 10 on stm32 (wath is the purpose of this) and the board on kicad files have two jumper pads sel1 (pin 15) and sel2 (pin18) to select the can id. The firmware works fine in both boards?