Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Hardware inside and outside of the ECU
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andreika
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Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by andreika »

Hellen81 is an ultracompact and cheap yet full-functional 8-Cylinder ECU board.
The board is compatible with some 81-pin ECUs:
  • Bosch M7.9.7;
  • Bosch ME7.9.7;
  • Bosch ME7.8.8;
  • Yanvar7.2 (Январь 7.2)
  • Micas10.3 (Микас 10.3).
The board is NOT compatible with 121-pin VAG ME7.x vehicles! For VAG, please see Hellen121

The board is a part of Hellen-One family and currently is in "work in progress" state, meaning NOT fabricated or tested yet!
Please do not use the gerber files, the board is not ready yet!

Wiki:

https://github.com/rusefi/rusefi/wiki/Hellen81

Key features:
  • up to 8 ignition channels (logic-level) and 4 high-voltage built-in igniters;
  • up to 8 injection outputs, 1 ETB, 10 low-side outputs, 2 push-pull outputs, 1 high-side output;
  • 20 analog inputs, 3 digital inputs, VR sensor;
  • USB-mini, CAN, K-Line, microSD, accelerometer;
The gerber files and schematics (WIP!):

https://github.com/andreika-git/hellen81/

iBOM:

https://rusefi.com/docs/ibom/hellen81-a-ibom.html

3D-rendered board view (rev.a):
Image

Pinout:

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andreika
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by andreika »

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bill
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by bill »

what cars does this fit on??
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by AndreyB »

bill wrote:
Fri May 14, 2021 8:07 pm
what cars does this fit on??
it fits 1,000 of specific old years Hyundai in US and 1,000,000 Ladas closer to RU
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by AndreyB »

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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by puff »

Please do not use the gerber files, the board is not ready yet!
obsolete info?
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by andreika »

puff wrote:
Fri Jul 30, 2021 1:47 pm
obsolete info?
The board needs a few modifications, so I guess we need to prepare rev.B for better user experience.
Please don't use the old rev.A gerbers for manufacturing.
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by puff »

what sort of modifications are these? btw, what's the ballpark estimate for its manufacturing costs? (jlcpcb?)
brilliant job, amazingly compact board!
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by andreika »

puff wrote:
Fri Jul 30, 2021 2:11 pm
what sort of modifications are these?
Here's the post with the essential modifications: https://rusefi.com/forum/viewtopic.php?p=41745#p41745
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by puff »

seems, no chips are available for jlcpcb assembly service these days? :?
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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by AndreyB »

Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

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Re: Hellen81 PnP for 81-pin M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3

Post by AndreyB »

I had a chance to enjoy this https://en.wikipedia.org/wiki/Lada_Samara#Samara_2 but without a Hellen81 in my hands I could only dream of Hellen.
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