microRusEfi pnp Miata MX5 NB2

Hardware inside and outside of the ECU
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AndreyB
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microRusEfi pnp Miata MX5 NB2

Post by AndreyB »

@kb1gtt has designed a Plug&Play board for NB2 miata, also known as Mk2.5 I believe :)

Image

Schematics is available at https://raw.githubusercontent.com/wiki/ ... hw72nb.pdf

As an experiment this adapter board would not be open source hardware at least for now.
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

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AndreyB
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Re: microRusEfi pnp Miata MX5 NB2

Post by AndreyB »

TDB
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

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AndreyB
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Re: microRusEfi pnp Miata MX5 NB2

Post by AndreyB »

TDB
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

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AndreyB
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Re: microRusEfi pnp Miata MX5 NB2

Post by AndreyB »

Got my test mule running for two seconds on this board today! That's a huge success, first spin seems to be functional!

Tomorrow I hope to add MAP sensor wiring to get it properly running :)
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https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

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Re: microRusEfi pnp Miata MX5 NB2

Post by stefanst »

That's great success indeed. Perfect way to not go crazy (or crazier as the case may be) during the shutdown. :D

dexter_lab
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Re: microRusEfi pnp Miata MX5 NB2

Post by dexter_lab »

Yeah looks great :) I am checking against my harness.
Some concerns to express
1. the heat around mosfet for 5V, could be a problem
2. if I remember correctly the tach output is 12V, it was not working with 5V (memories from 5 years ago)
3. from https://raw.githubusercontent.com/wiki/ ... hw72nb.pdf
3.1 D21 and D23 should be on pin 37,38
3.2 12_IGN_KEY on 4S - I have to check the hardware, as on my scheme 4S is not connected, same for 3H

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Re: microRusEfi pnp Miata MX5 NB2

Post by dexter_lab »

About alternator warring lamp, you are going to control it (on/off) via in PA15 from STM?

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Re: microRusEfi pnp Miata MX5 NB2

Post by AndreyB »

dexter_lab wrote:
Sat Mar 28, 2020 1:39 pm
2. if I remember correctly the tach output is 12V, it was not working with 5V (memories from 5 years ago)
3.2 12_IGN_KEY on 4S - I have to check the hardware, as on my scheme 4S is not connected, same for 3H
microRusEfi jumper needs to be set to +12v high-side, I believe we feed +12v signal into both tach and alternator

4S/3H, there is a difference between 2001 and 2003 cars. See notes at https://rusefi.com/wiki/index.php?title ... _.26_power
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

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