Hellen 88 BMW

Hardware inside and outside of the ECU
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AndreyB
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Hellen 88 BMW

Post by AndreyB »

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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

Getting closer!
image.png
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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

AndreyB wrote:
Wed Jul 07, 2021 3:02 am
Schematics draft added to https://github.com/rusefi/rusefi/wiki/Hellen-88-BMW
Just attempted to place the order! Schematics link updated last chance to find issues while I am working with JLC on placing the order.
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zarboz
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Re: Hellen 88 BMW

Post by zarboz »

I figured out how to get the BOM but cant find any PCB schematics for this particular board or a for sale link in your shop

how does one go about acquiring a hellen88 pin for BMW ? :D
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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

https://github.com/rusefi/rusefi/wiki/It's-complicated

Are you sure you have the BOM?

This board is still being developed. Issues were discovered and first order attempt was cancelled. Progress was done today, I hope to order first batch in September.
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zarboz
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Re: Hellen 88 BMW

Post by zarboz »

https://rusefi.com/docs/ibom/hellen88bmw-a-ibom.html


yah... the BOM is listed on your wiki....


at any rate looking forward to updates thanks for the reply
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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

Stefan says it fits inside the case nicely, stay tuned for test results!
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Re: Hellen 88 BMW

Post by OrchardPerformance »

Adding a couple more case fit pictures for the M60 case.

(And no, there isn't anything on that IP anymore, it was a note to myself a long time ago) :P
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E36 OBD1 325 Hellen Success

Post by stefanst »

I have an old 325is from 1995. This is the first car that got to test the new Hellen 88 board. This board is designed as an (almost) plug&play replacement for the Motronic M3.3, M3.1 and M3.3.1 (my car is M3.3.1).
After some initial bench testing to verify that things are unlikely to blow up when plugging it in, we had success starting the engine on the 2nd try. See video below. The first try was unsuccessful because the crank sensor (VR) signal was inverted. Quick jumpering on the board corrected that issue and the car fired right up:


Idle control works too:


Find the car on rusEFI online:
https://rusefi.com/online/?vehicleName=325is&user_id=554&sorts[uploadedMsq]=-1&sorts[uploadedLog]=-1
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Re: Hellen 88 BMW

Post by stefanst »

Picture of the re-jumpered board:
h88_rejumpered_VR.png
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AndreyB
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Re: Hellen 88 BMW

Post by AndreyB »

Available for sale. Definitely a development board not a PnP ECU

https://www.ebay.com/itm/334235601464
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
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