[Diy_efi] Microcontroller based Auto Related Projects

Wed Oct 31 16:51:11 UTC 2012

If you want something freescale, have a look at
www.technologicalarts.cathey have some nice boards, not particularly
cheap in these spoiled days,
though.

On Wed, Oct 31, 2012 at 5:41 PM, Aaron <aaron at creativeoverdrive.com> wrote:
> Crap !
>
> I meant Uninitiated!
>
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On
> Behalf Of Aaron
> Sent: Wednesday, October 31, 2012 12:32 PM
> To: diy_efi at diy-efi.org
> Subject: Re: [Diy_efi] Microcontroller based Auto Related Projects
>
> What automotive grade microprocessor / hobby board would you recommend for
> the ininitiated?
>
> Arduino, PIC, Basic Stamp, Freescale Evaluation Board like the
> KIT33812ECUEVME?
>
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On
> Behalf Of Bill Shaw
> Sent: Wednesday, October 31, 2012 8:41 AM
> To: diy_efi at diy-efi.org
> Subject: Re: [Diy_efi] Microcontroller based Auto Related Projects
>
> The operating voltage is not a significant decision factor when choosing
an
> automotive microprocessor.  The MPC5554 we are using has a 1.3 volt core
and
> 3.3 volt I/O.  It is an awesome  automotive microprocessor,  but the array
> of peripherals and registers would be a bit daunting for the uninitiated.
>
> Best,
>
> Bill
> On 10/31/2012 12:16 AM, Alan To wrote:
> It is a 3.3v chip and you really want 5v operation for automotive. The new
> Arduino Due will be a trainwreck, an epic one.
>
> On 10/30/2012 6:47 PM, xyz Q wrote:
> There's an ARM based Arduino. What would you say about that for a choice?
> On Oct 31, 2012 1:22 PM, "Avery Nisbet" <anisbet at gmail.com> wrote:
> 1.  Most of the hack a day projects are by IT/computer sci guys that look
> down on getting their hands dirty with cars. If you look deeply at some of
> the projects they will have really shoty electrical engineering in them.
> Some of them are pure hacks and would not work in a production sense.
 Some
> are pretty decent.
>
> 2. Pics from an architecture point of view kinda suck. They were not
> designed for use with stack based compilers(One working register).
> The Motorola stuff was some of the 1st used in the automotive space.
> The architecture lends itself to use with a compiler.  They are designed
for
> the harsher automotive environment.  Some will say they have nicer
hardware
> peripherals.  I would say some of the peripherals were designed
specifically
> for the automotive market. There is also a pretty big code base to look
at.
>  Oh and mostly anyone who went to school for software or hardware who is
> older than say 30 was forced to learn 6800(68HC11) or 68000 assembly
> language.  This usually involved getting ahold of the purple data books
> motorola gave away for free that were well enough written so you could get
> your class work or real work done. I probably have 2 or 3 copies of the
> 68HC11 books laying around somewhere. This being said there are many other
> options today and I would look to ARM or AVR before I looked at PIC.  ARM
is
> already dominating the cheap 32bit market and is pretty easy to pick up.
> This will help in the job search later. AVR's are pretty good for the 8bit
> scene.  GCC supports them and ATMEL makes some automotive environment
parts.
>
> 3.  Go get yourself an Arduino(or other uC of choice), BIP373(OR GM
ignition
> module) and some optoisolators.  Then build a distributor and/or crank
> trigger based ignition system. Then try turning that into a full engine
> management solution using the peak and hold add in board by Jbperf. Start
> researching the mega squirt schematics at the timing
> input(tach) and the ignition output. Build those circuite on a bread board
> and test on a bench. Then move them on to your test engine. It could be a
> lawn mower engine or a V8 monster. Read up on timing advance and program
the
> Arduino to do a simple RPM only based timing curve.  Then add a MAP and/or
> TPS sensors and add load as a factor of your timing curve.  Then engine
temp
> to add some cold start advantages and you have all the sensors needed to
do
> open loop EFI.  After adding injectors you could add a wide band O2 sensor
> such as the LC-1 from innovative motor sports or just a heated narrow band
> for cruze.
>
>
> -Avery
>
>
> On Mon, Oct 29, 2012 at 8:13 PM, xyz Q <xyzqhtc at gmail.com> wrote:
>> Hi, I've been on the list for some time, on and off mainly reading
>> bits, trying to find some interesting ideas. Unfortunately I was 10
>> years too late, when this forum had been in its prime.
>>
>> So here are my first set of questions that I hope on getting some
>> answers, hopefully.
>>
>> 1. Why are there so little auto related uc based projects and ideas
>> out there on the net? Look at hackaday.com, for example. Many
>> projects,
> talented
>> people but all they do is prove a point that some thing can be done.
>> But guess what hardly something is really useful. I may have missed
>> some good worth while so please put them here if you know.
>>
>> 2. If PICs are so popular, why are Motorola MCUs popular with auto
> projects?
>> In terms of features aren't they on the same "level"?
>>
>> 3. The way I see to learn microcontroller based EMS or ignition is to
>> look at it piece by piece. Megasquirt is great but it's hard to learn
>> a
> complete
>> system. Aren't there any web sites (I've seen DIYEFI) that have info
>> on
> say
>> ignition control, RPM handling with an MCU or other basic control
>> concepts that can form the basis for EMS/Ign. related projects. I'd
>> like to learn
> the
>> basics and if there are specific approaches to this, I'd like to hear
>> your side of the story. It would be helpful.
>>
>> Thanks and regards to all on the forum. Some projects here are really
>> nice and inspiring.
>>
>> Nik.
>>
>> _______________________________________________
>> Diy_efi mailing list
>> Diy_efi at diy-efi.org
>> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
>
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.diy-efi.org/pipermail/diy_efi/attachments/20121031/774ac877/attachment-0001.html 