Dual Channel wbO2, no ASIC

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SHOf429
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Dual Channel wbO2, no ASIC

Post by SHOf429 »

New thread for discussion on the development of a dual channel wbO2 controller. Original thread: https://rusefi.com/forum/viewtopic.php?f=4&t=1856
Josh
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Ordering info for the connector I used in this design:
MX150 Connector Order.pdf
(426.02 KiB) Downloaded 432 times
Josh
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Files can be found here. Please review and comment errors/changes/improvements.
@mck1117
Josh
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

I saw where the latest firmware has the ability to program the rusEFI O2 sensor controller. How would that work with two modules? Plug them in one at a time? Maybe an option can be added to set the controller ID for sensor one and sensor two before pressing the update firmware button?
Josh
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mck1117
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Re: Dual Channel wbO2, no ASIC

Post by mck1117 »

SHOf429 wrote:
Mon Jan 25, 2021 12:37 am
I saw where the latest firmware has the ability to program the rusEFI O2 sensor controller. How would that work with two modules? Plug them in one at a time? Maybe an option can be added to set the controller ID for sensor one and sensor two before pressing the update firmware button?
Yeah, I'd been thinking about that too. I think I'll end up having one "update firmware" button per index, in addition to "set index to X" buttons so that you can pick the index if you have multiple controllers.
SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Made some minor tweaks to the pcb layout. Adjusted some track sizes and added ground fill to the front side. Any insight or correction before a prototype is ordered?
Josh
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Re: Dual Channel wbO2, no ASIC

Post by mck1117 »

SHOf429 wrote:
Fri Jan 29, 2021 3:46 am
Made some minor tweaks to the pcb layout. Adjusted some track sizes and added ground fill to the front side. Any insight or correction before a prototype is ordered?
looks like git is empty?
SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

mck1117 wrote:
Fri Jan 29, 2021 3:47 am
SHOf429 wrote:
Fri Jan 29, 2021 3:46 am
Made some minor tweaks to the pcb layout. Adjusted some track sizes and added ground fill to the front side. Any insight or correction before a prototype is ordered?
looks like git is empty?
It's in the Hardware branch. New to Git. Can't get it to move to Main
Josh
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Re: Dual Channel wbO2, no ASIC

Post by mck1117 »

Ah - that's solvable.

git checkout main
git merge hardware

That will merge the progress on the hardware branch back in to main.
SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

All files have been merged to main.

Main concern is fitment of the modules side by side.
Josh
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Another layout I'm going to make a board for is two modules in line with the connector. Some people may like the form factor better.
Josh
94 Ford Taurus SHO
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

After further investigation, the front-to-back form doesn't really seem practical. The connector I selected is over 40mm wide and the module is roughly 25mm square.
Josh
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Re: Dual Channel wbO2, no ASIC

Post by mck1117 »

can you rotate the modules 90 degrees so the short side of the module points towards the connector?
SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

mck1117 wrote:
Wed Feb 03, 2021 8:55 pm
can you rotate the modules 90 degrees so the short side of the module points towards the connector?
I'll give that a look. I'm still weighing that against a connector that's 45mm wide. My side-by-side board measures 63x36mm at the moment.
Josh
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Preliminary work shows I may be able to get a board 55x55mm... layout in progress.
Josh
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Updates have been made to my original dual carrier board and a new design with the modules rotated 90 degrees has been uploaded as well.
https://github.com/jlwinland/wideband
Josh
94 Ford Taurus SHO
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SHOf429
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Re: Dual Channel wbO2, no ASIC

Post by SHOf429 »

Board re-design is in progress utilizing a different (smaller) connector. I am looking at the JAE MX23A18NF1 part. It is almost 10mm smaller length and width. Parts have been ordered for fitment testing. They are very attractive price-wise from AliExpress.

MX23A18NF1 MX23A18SF1 18 Pin/Way ECU Standard Pinheader Male Female Plug Housing Automotive Connector
https://a.aliexpress.com/_mKFzCpN
Josh
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Joey120373
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Re: Dual Channel wbO2, no ASIC

Post by Joey120373 »

I have used that MX23 series connector in the past, did a small MS2 (megasquirt2) board using the larger ( 32 pin? ) connector. That is a nice connector and pretty easy to work with.
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