Coming soon... - Page 4 - Tuning Forum

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Re: Coming soon...
Wednesday, July 18, 2007 6:08 AM
that's really going to be a selling point IMO. this will also help out the Ion/Cobalt guys, and the j-body guys that want an Eco stroker motor.

check out the MPC8245 processor from Freescale. it's one of the processors we use here at work. 32 or 64 bit bus, handles up to 2 GB SDRAM, and will handle up to a 66Mhz PCI bus. it's based on the G2 PowerPC core. I've got the reference manual in front of me, if you'd like to check it out.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”



Re: Coming soon...
Wednesday, July 18, 2007 6:21 AM
I've looked at using MPU's, but the application calls more for an MCU. The PPC is a great platform for making SBC's, but industrial control is lacking since it doesn't have any PWM, ADC, etc. I believe the processor I've picked is the following:

http://www.atmel.com/dyn/products/product_card.asp?part_id=4104

55mhz
5V Tolerant IO's
CAN 2.0a and 2.0b
Ethernet
USB 2.0 Controller
SPI
USART
8 Ch. ADC
512k Onboard Flash
128k of SRAM
TWI
DMA
RTC

Plenty of features I need.






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Re: Coming soon...
Wednesday, July 18, 2007 6:37 AM
very nice. didn't think of having the enet, USB, and CAN controller onboard. definitely a better decision than the Freescale proc. we don't use the USB or CAN busses here, but both of our enet controllers are external.

I've got something to read at work today. thanks!

I'm such a geek.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Coming soon...
Wednesday, July 18, 2007 11:41 AM
you amaze me dude..i wish i was smart..lol
Re: Coming soon...
Monday, July 23, 2007 7:04 PM


Caps,diodes, resistors, IC's, opto isolators, proto boards, crystals, etc... $160 worth of fun

Not Pictured, but I have:

- Processor
- Schmartboards (Prototyping board)
- Case





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Re: Coming soon...
Monday, July 23, 2007 9:16 PM
very nice Ron.



Re: Coming soon...
Monday, July 23, 2007 9:30 PM
looking good bro. can't wait to see the end product.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Coming soon...
Tuesday, July 24, 2007 6:14 AM
im definately psyched about the end result! i was talking to a couple of guys here at work about it and they were pretty impressed that someone was actually putting in the work to support the J-body crew.





Re: Coming soon...
Tuesday, July 24, 2007 10:15 AM
I'm glad I decided to check this forum out. I was going to go with HPT here real soon but now that I saw this thread I may just put that off for a couple more months. Great Work! I'll be checking progress almost daily
Re: Coming soon...
Tuesday, July 24, 2007 5:10 PM
Holy crap, the only thing I understood in all this talk is that it won't work with Autos right? Why is that, confused on that part..











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ
Re: Coming soon...
Tuesday, July 24, 2007 5:20 PM
WHITECAVY wrote:

Holy crap, the only thing I understood in all this talk is that it won't work with Autos right? Why is that, confused on that part..


Because the 4 speed transmission control is integrated in the ECU, and I'm not real sure how to control the solenoid duty, line pressures, and shift solenoids.





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Re: Coming soon...
Wednesday, July 25, 2007 5:42 AM
Ahhhh ok, thanks.. Hopefully that could be figured out somewhere down the line.. Or, do I see a 5 speed swap in my future? hehe











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ
Re: Coming soon...
Wednesday, July 25, 2007 7:02 AM
You should be able to piggy back it, like people do with the Megasquirt





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Re: Coming soon...
Wednesday, July 25, 2007 5:03 PM
Shifted wrote:

You should be able to piggy back it, like people do with the Megasquirt

Indeed.

...but Auto guys/gals would love you forever if you incorporated it


-

"Youth in Asia"...I don't see anything wrong with that.
Re: Coming soon...
Friday, July 27, 2007 9:22 AM
is it just 4spd autos or 3spd also, please dont tell me you cant do it for 3spd! man i really hope you could incorporate it and make it a direct replacement, any new updates on the prototype?





Re: Coming soon...
Friday, July 27, 2007 9:37 AM
3 speed shouldn't be a problem since its all hydraulically controlled in the transmission itself, but I'm still looking into it. I'm also looking into being able to control the 4 speed, but I can't guarantee anything at this point, there's almost no documentation anywhere on how to do it, because nobody does...

I'm hoping to prototype the injector circuit this weekend, and see if I can drive some injectors I have laying around. I'm also hoping to start getting the processor board prototyped. I've picked a different processor than the one posted above, its this one:

http://www.atmel.com/products/AVR32/uc3/uc3_2.asp

66mhz
7 16 bit PWM Channels
512kb Flash
64kb RAM, with an SDRAM controller (on the A0 line, I have the A1 at the moment)
10/100 Ethernet
12mb/s USB 2.0
Prioritized Interrupt Controller
3 Channel Timer/PWM Counter
2 SPI Interfaces
8 Channel, 10 Bit ADC
TWI Interface
JTAG
5V Tolerant I/O's

What makes this one better is it will allow me to use 4 PWM's for the injectors, and leave 2 free for the IAC and one for a boost controller.





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Re: Coming soon...
Friday, July 27, 2007 10:08 AM
This stuff fascinates me. How did you become so knowledgeable? I'm going to be going back to school sometime in the near future and am taking all kinds of suggestions to aid me in which direction I finally go. I know I want to be educated more w/ computers and I've already done the networking thing (boring) but the idea of all of this programming and controlling stuff is great. It's kinda like robotics... computer generated commands and such. Write me an email if you can Shifted. I don't have any other way of getting a hold of you.
Re: Coming soon...
Friday, July 27, 2007 10:09 AM
My email is in my registry, email me if you want more info on how to get into this kinda stuff as a profession...





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Re: Coming soon...
Friday, July 27, 2007 11:45 AM
I found the source code for a 4L60E transmission controller, not fully working (from the MS people), but it shouldn't be too hard to port to the 4T40E and get it to work. If I did, here are the features I would include:

Automatic or Manual Mode
Paddle Shifter Mode with RPM/Gear Protection
12x12 RPM/Load Shift Table
Overtemp Protection


I may have to develop a separate controller for this, so it would be an additional board inside the ECU. This is because the amount of resources I would need to control the transmission are beyond the controller that I have (it could control it by itself obviously, but not in addition to everything else, not enough hardware resources).





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Re: Coming soon...
Friday, July 27, 2007 6:35 PM
got any plans for JTAG? I could help you with that...

one of the things I'm working at work.

would be good for troubleshooting.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Coming soon...
Saturday, July 28, 2007 10:24 AM
Yeah, I do, its going to be used for the initial programming and debugging. If you have any schematics of a JTAG interface let me know. I also need to find or make a JTAG cable.





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Re: Coming soon...
Saturday, July 28, 2007 10:31 AM
I'll get you everything Monday.

check out http://www.corelis.com

it's what we're using at work.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Coming soon...
Saturday, July 28, 2007 2:02 PM
BREAKTHROUGH!!!!!!!!!!!!!!!!!!!!!!!!!

I said I was going to try to do this, and I did...

I've successfully controlled the cluster in the cavalier (my 2000) using nothing but my laptop. I can control the speedometer, tachometer, fuel gauge, temp gauge, theft light, and oddly enough, the door chime. I'm still working on some of the other lights and some of the functions.

Video is below:


0:14 Watch the RPM Gauge on the right
0:56 Watch the Speedometer
1:45 Watch the Fuel Gauge
-----------------------------------------------------------








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Re: Coming soon...
Saturday, July 28, 2007 2:05 PM
BTW, I did NOT use HPTuners do do any of the above.





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Re: Coming soon...
Saturday, July 28, 2007 5:41 PM
Badass.....
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