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.”
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.”
you amaze me dude..i wish i was smart..lol
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.”
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.
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
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
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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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
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.
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?
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.
4cyltuner.com - Information Source For 4 Cylinder Tuners
Buy stuff from CarCustoms Ebay! Won't be disappointed!
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.
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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Buy stuff from CarCustoms Ebay! Won't be disappointed!
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.”
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.”
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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Buy stuff from CarCustoms Ebay! Won't be disappointed!