[help needed] E85 / Flex fuel logic

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YuMe3D
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Re: E85 / Flex fuel logic

Post by YuMe3D »

Great thank you..
Will post some pics in the Early part of the new year.

mck1117
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Re: E85 / Flex fuel logic

Post by mck1117 »


SHOf429
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Re: E85 / Flex fuel logic

Post by SHOf429 »

Very excited to see the progress on the flex fuel sensor. Any recommendations/requirements as to which pin to use? I know it has to be configured as open drain with a pull-up.
Josh
94 Ford Taurus SHO
Frankenso in progress

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AndreyB
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Re: E85 / Flex fuel logic

Post by AndreyB »

Do we have a sample tune and sample log of the sensor actually working? Do we actually log flex fuel? :)
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very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
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mck1117
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Re: E85 / Flex fuel logic

Post by mck1117 »

AndreyB wrote:
Wed Jan 13, 2021 4:33 am
Do we have a sample tune and sample log of the sensor actually working? Do we actually log flex fuel? :)
We log it, the channel is called "flex ethanol %" or something like that. You can watch the impact of target afr changing even as target lambda stays constant.

I tested on the bench with a function generator, but to my knowledge nobody has plugged it in to a real sensor yet.

mck1117
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Re: E85 / Flex fuel logic

Post by mck1117 »

SHOf429 wrote:
Wed Jan 13, 2021 3:33 am
Very excited to see the progress on the flex fuel sensor. Any recommendations/requirements as to which pin to use? I know it has to be configured as open drain with a pull-up.
On proteus any digital input will work. On MRE, you should be able to use the analog temp inputs or the cam input. Analog volt inputs should work too, but will require an external pullup resistor.

SHOf429
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Re: E85 / Flex fuel logic

Post by SHOf429 »

mck1117 wrote:
Wed Jan 13, 2021 8:30 am
SHOf429 wrote:
Wed Jan 13, 2021 3:33 am
Very excited to see the progress on the flex fuel sensor. Any recommendations/requirements as to which pin to use? I know it has to be configured as open drain with a pull-up.
On proteus any digital input will work. On MRE, you should be able to use the analog temp inputs or the cam input. Analog volt inputs should work too, but will require an external pullup resistor.
I am setting up a Frankenso 0.5.6 board at this time. Anything special about that board?
Josh
94 Ford Taurus SHO
Frankenso in progress

mck1117
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Re: E85 / Flex fuel logic

Post by mck1117 »

SHOf429 wrote:
Wed Jan 13, 2021 6:32 pm
I am setting up a Frankenso 0.5.6 board at this time. Anything special about that board?
In that case, you can use any analog input, provided that you install a pullup resistor on that channel.

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