Project Frankenstein - full ECU shield

Hardware inside and outside of the ECU

Project Frankenstein - full ECU shield

Postby russian » Mon Dec 30, 2013 6:46 pm

Status: version 0.1 is fully functional!

Frankenstein board wiki
pinout
Available @ Tindie

Image

phpBB [video]


SVN repository
frankenstein.zip
Schematic.pdf
BOMs: digikey detailed / digikey aggregated

This board consists of:

12 channel analog input - LMV324ID
12 channel low side - VNS14NV04 (injectors & solenoids)
6 channel hi side (ignition modules) - TC4427
VR input - MAX9926
CAN bus- SN65HVD230
microSD & USB TTL - FT232RL

So this 10x10cm board would be sitting above or underneath the discovery board like this

I guess it's better to have the board underneath the discovery so that I can still have access to the reset button & the LEDs. On the other hand I need access to the components on the Frankenstein board so soldering the boards together is probably not an option.
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Re: Project Frankenstein

Postby russian » Mon Dec 30, 2013 8:49 pm

Q&A

Q: I see Frankenstein has a USB serial adapter on it. Will I be able to communicate with the ECU without that particular port?
A: You can use any $2 USB-UART from ebay to replace the FT232 functionality (worth noting that CP210x have lame reputation, I know from my own experience that CP2102 Windows 7 drivers are giving me BSOD too often), you can also get away with just the micro-usb on stm32f4discovery (worth noting https://sourceforge.net/p/rusefi/tickets/46/) See also: viewtopic.php?f=5&t=210




"m3 standoff" that's what these are called... gotcha :)

Attaching stm32f4discovery gerbers so that later I can open them using http://sourceforge.net/projects/gerbv/files/gerbv/ and find the best spots to drill...
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Re: Project Frankenstein - full ECU shield

Postby russian » Sun Jan 26, 2014 4:42 am

First post updated with the new picture - I think I have a alpha2 version!

Known issues for tomorrow:
1) merge 3V and 3.3V nets
2) more mounting holes

Other than that, I believe I have a board which combines 12 analog inputs with 12 low-side outputs with cam/crank with CAN. I think it's pretty cool.
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Re: Project Frankenstein - full ECU shield

Postby hasse.69 » Sun Jan 26, 2014 11:20 am

Damn you have been working.........
Looks impressive.

Best regards , Hasse.
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Re: Project Frankenstein - full ECU shield

Postby russian » Tue Jan 28, 2014 3:27 pm

It's probably too early to think about it, but I wonder if maybe we should keep this design forever - 10x10 CPU board on top with some super-common stuff like SD card / USB interface, and IO board bolted from the bottom?

Question is what kind of connection between two board would withstand automotive application?

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Re: Project Frankenstein - full ECU shield

Postby kb1gtt » Tue Jan 28, 2014 9:51 pm

I don't see much reason why it can't all fit on 10cmX10cm. Long term I don't think it will be 2 boards, when it can be on board the size of your hand.
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Re: Project Frankenstein - full ECU shield

Postby russian » Tue Jan 28, 2014 10:19 pm

kb1gtt wrote:I don't see much reason why it can't all fit on 10cmX10cm.


I probably agree that a board which would suit 80% of cars would fit on 10x10cm (4x4 inches), but I doubt the same 10x10 PCB would work for _all_ cars. So, either we would need a number of boards, or we would need a 'base' board and 'expansion' board?
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Re: Project Frankenstein - full ECU shield

Postby russian » Sun Feb 02, 2014 6:17 pm

todo: need to write a script which would produce a full BOM

This module relies on external 5v power supply, you can use something like this one from eBay
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Re: Project Frankenstein - full ECU shield

Postby Number-One » Sun Feb 02, 2014 11:35 pm

Price for this module?
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Re: Project Frankenstein - full ECU shield

Postby russian » Mon Feb 03, 2014 12:41 am

Number-One wrote:Price for this module?

Too early to say, I need to get the PCBs in my hands & test before I even think about it.
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