[Diy_efi] Megasquirt

[Avery Nisbet]

Fred, thats a lot like the Pot calling the kettle black.  Megasquirt
is really just a rip off of the GM ecms then.
The code is so similar that you can use megatune's autotune automated
tuning on the GM code58 based bins.

Vems is just as open or closed as Megasquirt.  Bowling and Gripo
charge for the right to produce the PCB's.
Bowling and Gripo also keep the source to Megasquirt in assembly
langage all in one file.  This makes changing it nearly impossible.
I have a few copies of the Jan-2002 issue of Circuit Celler which has
the article written by Bowling and Gripo that started the whole
megasquirt project.  It outlines all the major parts of the code and
hardware. It's a great howto on writing your own EMS.
I think the VEMS project is just trying to protect their work on
IONSENSE or possible protect themselves from the owners of those
patents.


-Avery
2011/2/19 Fred Cooke <fred.cooke at gmail.com>:
> WHOA, wait a second... VEMS is NOT open source, you need to sign an NDA to
> get the source. VEMS started life as a rip off of megasquirt, recoding the
> assembly code into C for the AVR (MegasquirtAVR), it was cleanly written and
> marked as "free" but because it was a stolen design the only thing free
> about it was that it wasnt on US soil... (couldnt be sued). Soon after that
> others got involved and it became very much non-free, if you can provide a
> current download link to the source, with appropriate licenses, I will bend
> over and kiss your arse ;-) I'm not a fan of arse, though, so I must be
> pretty damn sure that you're wrong to make that statement.
>
> If you want something Free and Open Source (FOSS) have a google, there are
> several projects, mine included.
>
> Fred.
>
> On Sun, Feb 20, 2011 at 5:10 AM, L.J.J. Martens <ljj.martens at home.nl> wrote:
>>
>> Hi Mitch,
>>
>> because of the flexability (turbocharging a four cylinder European Ford) I
>> went the way of an aftermarket ecu. Instead of Megasquirt I used VEMS
>> instead. It comes with a harnes if you like.
>> VEMS is open source.
>> Check it out on http://www.vems.hu/.
>>
>> Regards,
>> Laurens
>>
>>
>> ,----- Original Message -----
>> From: "Mitch Barrie" <mitch at mesatactical.com>
>> To: <diy_efi at diy-efi.org>
>> Sent: Friday, February 18, 2011 11:47 PM
>> Subject: [Diy_efi] Megasquirt
>>
>>
>> >I have been mulling a project for some time (over a decade) and am not
>> > sure where to start.
>> >
>> > I have a ZZ4 crate motor that I have long wanted to convert to EFI.
>> > There are kits available from people like Holley and Edelbrock for this
>> > application, but I am more interested in using a standard GM TPI intake
>> > and manifold. ?I could also use the factory electronics, but lately I
>> > have been wondering whether using something like Megasquirt might make
>> > it a little easier of a project. ?On the one hand, the factory set-up is
>> > complete, but will require a lot of noodling around to get right. ?On
>> > the other, the Megasquirt might offer a little more flexibility.
>> >
>> > Anyone have any thoughts or suggestions?
>> >
>> >
>> > Mitch
>> >
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