Bavarian Soundwerks
Page 7 of 73 FirstFirst 12345678910111213141516173257 ... LastLast
Results 151 to 175 of 1801

Thread: Feeler: Open Source OBC Firmware

  1. #151
    Join Date
    Dec 2003
    Location
    SJ, CA
    Posts
    2,343
    My Cars
    '00 Z3C, '70 XJ6
    I would very much like this to work in my e31! I wonder if the circuitry is similar enough to retrofit the modified e36 OBC?

    The e31 display has only one connector and I believe a separate computer to calculate input variables (possibly this could be bypassed?)


    ^pic borrowed from BMW M Registry
    2.8 Z3 coupe + 6 speed || 200kW electric 1970 Jaguar XJ6

  2. #152
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.
    Screen pin 11 is a clock feed, so there are only 3 common lines to both drivers. most likely a serial interface...

  3. #153
    Join Date
    Mar 2003
    Location
    St. Joseph, Mo.
    Posts
    1,913
    My Cars
    e36, e46 ZHP, MkiV Tdi
    Quote Originally Posted by Mefis View Post
    Design is in progress!!
    Couple of questions on the project:

    a) Anyone has a check module laying arround?

    b) What kind of radar detectors would people like to plug into the open OBC? I have a cheap-o cobra that had LEDs on the screen and I just pulled those lines out into the unused holes in my instrument cluster. Anything more fancy out there? Anyone has data on how to hardwire the V1 for instance?

    c) Another what-if. I think there is enough space to add a SD card holder. It could be used to "map" the speed limits for instance, such that the OBC will know the speed limit at each location. We would either need massive data of speed limits around the country, or world, or the user may mark the "sensitive" streets and it's limits using the LIMIT button, so that it beeps next time if you are 10+limit or with the radar, or create a condidtional radar beep if you are 10+limit or somethign like this. What do you guys think?
    4GB would be enough for the whole world...

    b) Valentine 1 is a MUST! I've run across a document somewhere that talked about how to communicate with and talk to the V1. I think you can get it from Valentine themselves. Others have done this; witness the stealthone product that existed for awhile.

    c) What about the ability to use the SD card to store data from things like the oil pressure, temp, etc?
    '95 325iS - auto to manual swap done!

  4. #154
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.
    I'll draw the SD card socket on the main board, and then those things will be on later software revs. The idea we had with m2pc was that the firmware should have everyday stuff, things that are on 24/7 and in your M-F conmute. Everything else should be on the carpc which is much easier to program.

    I'll look into the V1.

    [quote=Bryson;15518026]I would very much like this to work in my e31! I wonder if the circuitry is similar enough to retrofit the modified e36 OBC?

    The e31 display has only one connector and I believe a separate computer to calculate input variables (possibly this could be bypassed?)

    Worst case you plug in the power, gnd, speed reed switch and forget the rest.... or maybe you can retrofit 100% of the funcionality....
    Last edited by Mefis; 02-12-2009 at 09:26 AM. Reason: Automerged Doublepost

  5. #155
    Join Date
    Dec 2004
    Location
    NJ
    Posts
    1,126
    My Cars
    95 525iT/97 328iC/03 530

    Link to E36 Oil cooler adapter

    http://store.nexternal.com/shared/St...t=products.asp


    If this link does not work, go to http://www.bmw2002.com/ and click on E36 parts, then click on engine parts. The oil cooler adapter is top of the page. It costs $150.00 not the $100.00 I remembered but is still a good way to go if you want a clean looking installation for the sensors.

  6. #156
    Join Date
    Apr 2007
    Location
    Yorba Linda, CA
    Posts
    3,780
    My Cars
    1999 TiAg M3, 2003 E46M3
    Regarding the E31 retrofit, I'm not sure how much functionality you will get if there's no fuel consumption reading or if the CHECK CONTROL module isn't like the E36.

    Rats, the oil cooler adapter only works with E36's with the metal bolt on top... mine is the one-piece plastic top with "bolt" molded in plastic.

    I hand-cut some protoboard to fit where the PCB was in my OBC:

    (sorry for junky iPhone pic)

    Next steps for me are:

    1) Build PC parallel port logic analyzer to "sniff" the data lines going to the display to reverse-engineer the protocol used to send text to the display PCB.
    2) Desolder the cables from my test OBC and solder them into my prototype unit so I can start reading signals from the E36 sensors, etc.

    More updates to follow!

    Ok I just got my test unit powered up on the bench and took the first logic analyzer snapshot. During this capture the OBC was displaying nothing on the main display, and "1:13 AM" on the clock:



    Inputs are mapped as follows:

    1 - OBC Display Header Pin 4
    2 - OBC Display Header Pin 5
    3 - OBC Display Header Pin 6
    4 - OBC Display Header Pin 7
    5 - OBC Display Header Pin 8
    6 - OBC Display Header Pin 9
    7 - OBC Display Header Pin 10
    8 - OBC Display Header Pin 11
    Last edited by m2pc; 02-13-2009 at 03:04 PM. Reason: Automerged Doublepost

    1999 ///M3 TiAg | Heated Power Vaders | DDM Projector36 5000K 55W HIDs | DDM 3000K 35W HID Fogs
    DDM Smoked Corners | DDM Weighted Shift Knob | K&N CAI | Mishimoto AL Rad w/Zionsville AL Shroud
    Stewart HiPo Water Pump | Samco Hose Kit | 16" SPAL Puller Fan | Viper 5701LE Security
    E36 OBC is now open! Join the effort: BF.C Thread | openOBC Wiki

  7. #157
    Join Date
    Dec 2004
    Location
    NJ
    Posts
    1,126
    My Cars
    95 525iT/97 328iC/03 530

    Another oil pressure and temp gauge adapter option

    I did more searching and came up with a couple of options:

    1. http://us.st12.yimg.com/us.st.yimg.c...s_2017_1548936

    2. http://www.speedograph-richfield.com..._lines.html#TP

    The first is at http://www.jt-designs.com/ and I think it is the cleaner approach. The second is a lower cost option that will require a little more work to get the install looking good. Both of these approaches will work with the type of oil filter on the 328i M52 engine and on the bolted style filter cap models with M50 and S50 engines. The OEM oil pressure sensor is mounted at the base of the oil filter housing. It screws into the housing with an M12 X 1.5 thread. The adapters screw into the stock location and provide 1/8 NPT threaded ports in addition to the stock M12 X 1.5 port. I am going to try to get a pic of the stock set up tomorrow. I have an S52 on a stand in my garage and it should be easy to get a good look.

    I also found VDO oil pressure and temperature senders mentioned multiple times. Next step is to find out if info exists on the resistance profile for these sensors. If these sensors are simple variable resistors, doesn't that mean there has to be a resistor close to the microcontroller to set up a voltage divider to measure resistance of the sensor? Does that also mean there has to be a voltage source with enough current capability to feed the divider? Aftermarket gauges probably have this circuitry built into the gauge display module. (I am going to look at the Megasquirt site to see how they measured water temperature. Their method should answer these questions.)

    BTW, did I mention that IMO oil temp, water temp, and oil pressure are the most important parameters to measure? If running forced induction, I would add inlet air temp, A/F ratio, and exhaust temp to that list.

    I am a EE with over 15 years experience with analog instrumentation in gas turbine test cells and Navy aircraft. My specialties were engine control systems and drivetrain health monitoring systems. I was primarily a diagnostician and troubleshooter. Now, I manage other contractors doing the work. I don't have experience with embedded programming but your project has really sparked some interest in me. (I did play around with Atmel AVRs around 7 years ago but never went beyond basic tutorials.) Is there a good PIC starter kit that would let me experiment with what you are doing? I looked on Microchip's web site and noticed that there are multiple options for evaluation boards. It is not clear if any have the pin outs I would need to interface with the display and sensors involved in this project. I don't know if I will learn quickly enough to contribute any code but I am very interested in trying.
    Last edited by Mark185; 02-13-2009 at 10:26 PM.

  8. #158
    Join Date
    Apr 2007
    Location
    Yorba Linda, CA
    Posts
    3,780
    My Cars
    1999 TiAg M3, 2003 E46M3
    Quote Originally Posted by Mark185 View Post
    I did more searching and came up with a couple of options:

    1. http://us.st12.yimg.com/us.st.yimg.c...s_2017_1548936

    2. http://www.speedograph-richfield.com..._lines.html#TP

    The first is at http://www.jt-designs.com/ and I think it is the cleaner approach. The second is a lower cost option that will require a little more work to get the install looking good. Both of these approaches will work with the type of oil filter on the 328i M52 engine and on the bolted style filter cap models with M50 and S50 engines. The OEM oil pressure sensor is mounted at the base of the oil filter housing. It screws into the housing with an M12 X 1.5 thread. The adapters screw into the stock location and provide 1/8 NPT threaded ports in addition to the stock M12 X 1.5 port. I am going to try to get a pic of the stock set up tomorrow. I have an S52 on a stand in my garage and it should be easy to get a good look.
    Wow those look like very cool products for this application. Doesn't Jim Powell (DDM Tuning) have something to do with JT Designs?

    Quote Originally Posted by Mark185 View Post
    I also found VDO oil pressure and temperature senders mentioned multiple times. Next step is to find out if info exists on the resistance profile for these sensors. If these sensors are simple variable resistors, doesn't that mean there has to be a resistor close to the microcontroller to set up a voltage divider to measure resistance of the sensor? Does that also mean there has to be a voltage source with enough current capability to feed the divider? Aftermarket gauges probably have this circuitry built into the gauge display module. (I am going to look at the Megasquirt site to see how they measured water temperature. Their method should answer these questions.)
    Yes a simple voltage divider is all that's needed. Each A/D input port should be able to provide enough current for the divider network to operate properly. It's a simple matter of tying the input to +5V with a given resistor, and letting the sensor ground it out with a varying resistance, resulting in a varying voltage drop.

    Quote Originally Posted by Mark185 View Post
    BTW, did I mention that IMO oil temp, water temp, and oil pressure are the most important parameters to measure? If running forced induction, I would add inlet air temp, A/F ratio, and exhaust temp to that list.

    I am a EE with over 15 years experience with analog instrumentation in gas turbine test cells and Navy aircraft. My specialties were engine control systems and drivetrain health monitoring systems. I was primarily a diagnostician and troubleshooter. Now, I manage other contractors doing the work. I don't have experience with embedded programming but your project has really sparked some interest in me. (I did play around with Atmel AVRs around 7 years ago but never went beyond basic tutorials.) Is there a good PIC starter kit that would let me experiment with what you are doing? I looked on Microchip's web site and noticed that there are multiple options for evaluation boards. It is not clear if any have the pin outs I would need to interface with the display and sensors involved in this project. I don't know if I will learn quickly enough to contribute any code but I am very interested in trying.
    Wow, that's an impressive background! I'm mostly self-taught, dabbling in various electronics/computer programming projects.
    My main line of work is actually web/eCommerce/database development. One of my main goals with the openOBC project is to sharpen my EE skills!

    I use an older programmer (PicStart Plus) that's RS-232 and can program most devices. Microchip has an IDE (MPLAB) that allows you to write programs in either assembly language or C/C++. That same application also drives the programming device, allowing you to "burn" your compiled programs to the actual PIC chip.

    They also make a cheaper USB-powered device that's just as effective, but you have to wire up your own socket.

    I will compile a list of resources for beginners once I launch the official openobc.org website, in the next couple weeks.
    Right now I'm bogged down with decyphering the display protocol for the OBC's LCD module...

    Once that is out of the way we can begin the really fun stuff!
    Last edited by m2pc; 02-14-2009 at 03:23 AM.

    1999 ///M3 TiAg | Heated Power Vaders | DDM Projector36 5000K 55W HIDs | DDM 3000K 35W HID Fogs
    DDM Smoked Corners | DDM Weighted Shift Knob | K&N CAI | Mishimoto AL Rad w/Zionsville AL Shroud
    Stewart HiPo Water Pump | Samco Hose Kit | 16" SPAL Puller Fan | Viper 5701LE Security
    E36 OBC is now open! Join the effort: BF.C Thread | openOBC Wiki

  9. #159
    Join Date
    Mar 2003
    Location
    St. Joseph, Mo.
    Posts
    1,913
    My Cars
    e36, e46 ZHP, MkiV Tdi
    i did some quick searching and still can't find the document i saw once that talks about interfacing with the V1.

    in the meantime, i found several links that might help:

    http://www.kc8unj.com/radar/

    http://www.mp3car.com/vbulletin/user...ne-one-pc.html

    hopefully that's helpful, if not - please ignore!! Just trying to help.....
    '95 325iS - auto to manual swap done!

  10. #160
    Join Date
    Apr 2006
    Location
    WA
    Posts
    359
    My Cars
    '00 M5, 98 M3/4/5
    Man, this is totally awesome. I've been wanting to do something like this since I first got my E36.

    I would really like to see a version of this done with no GPS and no GSM...just the PIC. I already have a GPS, and am not interested in spending the extra dough for the GSM integration, etc.

    I've done a bit of uController programming and such. Don't know if I will be able to help out, but I will if I can.

    It would be great if you could run a JTAG header off the unit so a ribbon cable could be run over to the footwell or glove box so we could flash new code to the PIC without needing to pull the unit out of the dash.

  11. #161
    Join Date
    Apr 2007
    Location
    Yorba Linda, CA
    Posts
    3,780
    My Cars
    1999 TiAg M3, 2003 E46M3
    Quote Originally Posted by shadowpuck View Post
    i did some quick searching and still can't find the document i saw once that talks about interfacing with the V1.

    in the meantime, i found several links that might help:

    http://www.kc8unj.com/radar/

    http://www.mp3car.com/vbulletin/user...ne-one-pc.html

    hopefully that's helpful, if not - please ignore!! Just trying to help.....
    So the V1 is basically a "brain" and "display" module, with a serial interface? If so, it'd be trivial to interface with!

    Quote Originally Posted by HarvesterOfBeer View Post
    Man, this is totally awesome. I've been wanting to do something like this since I first got my E36.

    I would really like to see a version of this done with no GPS and no GSM...just the PIC. I already have a GPS, and am not interested in spending the extra dough for the GSM integration, etc.
    We're budgeting the board space for the GPS module, but you can leave it disconnected if you like. I'm planning for an external RTC (real-time clock) chip for use if/when the GPS module is omitted. Having the GPS onboard does enable a lot of functionality, such as a self-setting clock based on the U.S. atomic clock, as well as an altimeter, accurate speedometer for time/distance/mileage calculations, and other useful functions.

    Quote Originally Posted by HarvesterOfBeer View Post
    I've done a bit of uController programming and such. Don't know if I will be able to help out, but I will if I can.

    It would be great if you could run a JTAG header off the unit so a ribbon cable could be run over to the footwell or glove box so we could flash new code to the PIC without needing to pull the unit out of the dash.
    We're going to have an ICSP header on the board, so you can reprogram the PIC using 5 wires connected to any PIC programmer. Once we get our website up, there will be an area where you can grab the latest code and hardware reference design documents, so you can expirement on your own and post your findings to the site.

    UPDATE: Ribbon cables connecting Display Board -> Logic Board inside my OBC have been unsoldered and replaced with Molex-type connectors.

    This will make it easier to move from the OEM Logic Board to the openOBC logic board.

    Last edited by m2pc; 02-17-2009 at 02:26 PM. Reason: Automerged Doublepost

    1999 ///M3 TiAg | Heated Power Vaders | DDM Projector36 5000K 55W HIDs | DDM 3000K 35W HID Fogs
    DDM Smoked Corners | DDM Weighted Shift Knob | K&N CAI | Mishimoto AL Rad w/Zionsville AL Shroud
    Stewart HiPo Water Pump | Samco Hose Kit | 16" SPAL Puller Fan | Viper 5701LE Security
    E36 OBC is now open! Join the effort: BF.C Thread | openOBC Wiki

  12. #162
    Join Date
    Sep 2003
    Location
    Eugene Oregon
    Posts
    110
    My Cars
    '95 Daytona Violet M
    Well, I was skeptical but this is actually going somewhere so I'm in for the ride.

  13. #163
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.
    Greak job Shadowpuck! Is a very good start.
    There will be one DB9 port to choose between GSM funcitonality or V1 interface.
    Awesome!!

  14. #164
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.
    Well... according to the data posted by shadowpuck, the V1 can be interfaced with a standard 9pin serial port. We will accommodate this on the openOBC design. the software is to be dealt with later

    We have been working with a PC based logic analyzer (parallel port) but is to slow to capture all the data flowing into the port to hack the protocol, given that we find no datasheet. Note that sometimes we capture 4 clock cycles and sometimes 3. This suggest 2 pulses are going into one PC acquisition.

    Solutions are a)get a real logic analyzer which i don't have or b) weld a slower quartz crystal on the existing OBC, this will make the clock slower and we should be able to read the data with the PC. this is the next step...
    Attached Images Attached Images

  15. #165
    Join Date
    Apr 2006
    Location
    WA
    Posts
    359
    My Cars
    '00 M5, 98 M3/4/5
    Quote Originally Posted by Mefis View Post
    Well... according to the data posted by shadowpuck, the V1 can be interfaced with a standard 9pin serial port. We will accommodate this on the openOBC design. the software is to be dealt with later

    We have been working with a PC based logic analyzer (parallel port) but is to slow to capture all the data flowing into the port to hack the protocol, given that we find no datasheet. Note that sometimes we capture 4 clock cycles and sometimes 3. This suggest 2 pulses are going into one PC acquisition.

    Solutions are a)get a real logic analyzer which i don't have or b) weld a slower quartz crystal on the existing OBC, this will make the clock slower and we should be able to read the data with the PC. this is the next step...
    I'm up in the Seattle area and have a HP 16500C logic analyzer. No way I'd be able to come down to Portland, but you are coming up this way, we could probably hook up and spend some quality time with the LA. Lemme know...

    -Pete

  16. #166
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.
    Thanks Pete!! The slower crystal should be on the mail, if that fails, I may drive up there! Appreciate the offer!

  17. #167
    Join Date
    Apr 2007
    Location
    Yorba Linda, CA
    Posts
    3,780
    My Cars
    1999 TiAg M3, 2003 E46M3
    Excellent, this will get resolved one way or another!

    1999 ///M3 TiAg | Heated Power Vaders | DDM Projector36 5000K 55W HIDs | DDM 3000K 35W HID Fogs
    DDM Smoked Corners | DDM Weighted Shift Knob | K&N CAI | Mishimoto AL Rad w/Zionsville AL Shroud
    Stewart HiPo Water Pump | Samco Hose Kit | 16" SPAL Puller Fan | Viper 5701LE Security
    E36 OBC is now open! Join the effort: BF.C Thread | openOBC Wiki

  18. #168
    Join Date
    Aug 2008
    Location
    Forest Lake, MN
    Posts
    31
    My Cars
    1997 M3
    just wanted to pop in and say, this sound really interesting. Good luck with everything

  19. #169
    Join Date
    Mar 2008
    Location
    Portland, OR, USA
    Posts
    106
    My Cars
    1999 M3 Conv.

    Some progress on screen interface

    Hi All!
    This is just to report some progress with the screen interface. The slower crystal worked very well. Here the output of some program to convert the text back from the serial interface acquired with the pc based analyzer:
    Some additional dificulties in catching the very first characters to initialize the display, but i'll play around to get those. Somehow the config is back to german language.

    The next step will be to drive this screen with the parallel... stay tuned.
    Attached Images Attached Images

  20. #170
    Join Date
    Oct 2005
    Location
    Lawrenceville, GA!
    Posts
    10,456
    My Cars
    Many Broken Ones
    I believe in one of the secret menus in the OBC you can change the language.
    Maybe.
    460whp/515wtq wifes MMW tuned 335i

  21. #171
    Join Date
    Dec 2003
    Location
    SJ, CA
    Posts
    2,343
    My Cars
    '00 Z3C, '70 XJ6
    Quote Originally Posted by m2pc View Post
    Regarding the E31 retrofit, I'm not sure how much functionality you will get if there's no fuel consumption reading or if the CHECK CONTROL module isn't like the E36.
    all e31s operate on a similar m-bus to the early e36s IIRC, the difference between the two is that the e36 is an OBC and display, the e31 has an underdash OBC and in console display only. The fuel consumption is calculated in the same fashion as the e36, e30, etc, barring that there are 12 cylinders and different size injectors to compensate for. Speed signal should be the same, just curious if the e31 has more inputs for the check control errors. Do you possibly have a list of the errors in an e36 to compare the e31 against?

    I'm planning on following your lead once the project is complete regardless of speculation on the e31 side

    I also have a V1 and OBC integration is more than welcome
    Last edited by Bryson; 03-09-2009 at 04:03 PM.
    2.8 Z3 coupe + 6 speed || 200kW electric 1970 Jaguar XJ6

  22. #172
    Join Date
    Nov 2008
    Location
    TX - Dallas Area
    Posts
    335
    My Cars
    3/92 E36 Sedan
    Very nice so far. Nice to see that some progress is being made, and rather quickly I might add.


  23. #173
    Join Date
    Mar 2008
    Location
    Fort Wayne, IN
    Posts
    621
    My Cars
    '96 328iC, '05 Impreza, '88 LS1-RX7
    Very cool project. Wish I had the time to offer more currently. I should be able to contribute to the basic framework once you guys get it going though.

    Reminds me of back in the day; my Uncle and I once reverse engineered Pioneer's databus with an o-scope. That was a major pain.

    Good luck, great progress!
    1996 BMW 328iC - Sold.
    2007 G35x - Daily Tourer.
    2005 Subaru Impreza - Nasty weather entertainment.
    1988 Mazda RX7 - LS1/2004r swap, 3600 RPM stall, heads/cam/TC76 Turbo, 2 Step, E85, Corvette Dana36 Rear, full suspension, yada yada... Bottled evil.

  24. #174
    Join Date
    Apr 2007
    Location
    Yorba Linda, CA
    Posts
    3,780
    My Cars
    1999 TiAg M3, 2003 E46M3
    I'll be back in the game once my E36 quits breaking on me (fixing all my PS hoses and oil leaks has kept me away from the openOBC).

    Thankfully Mefis is working on it so the project's not dead yet!

    1999 ///M3 TiAg | Heated Power Vaders | DDM Projector36 5000K 55W HIDs | DDM 3000K 35W HID Fogs
    DDM Smoked Corners | DDM Weighted Shift Knob | K&N CAI | Mishimoto AL Rad w/Zionsville AL Shroud
    Stewart HiPo Water Pump | Samco Hose Kit | 16" SPAL Puller Fan | Viper 5701LE Security
    E36 OBC is now open! Join the effort: BF.C Thread | openOBC Wiki

  25. #175
    Join Date
    May 2007
    Location
    US
    Posts
    943
    My Cars
    '94 325i / s13
    This project needs to go somewhere. I like where it's going, and I really like where it could be going. Something much like it has been somewhere on my absurdly long list of projects to do for a long time but I can never manage to keep one project on the table long enough to finish it. Hopefully having multiple people involved will keep this one from dying. Let me say right off the bat that I am "in" and quite capable of contributing to this, but that I come and go from time to time.

    Random thoughts:

    I looked in to interfacing with radar detectors a while back. The V1 is easy to interface with, but I didn't want to exclude the non-V1 crowd from the fun. I believe that most radar detectors have an external speaker output. A microcontroller would be able to universally interface with any radar detector by processing the analog audio signal. Each user could use a "learn" mode to teach it what the various sounds meant. Like so many other things, I looked in to this far enough to make sure it was doable, but never actually picked it up and ran with it.

    Somebody mentioned SD cards at some point. They interface very well with pics thanks to the fact that they have an spi interface in addition to the SD protocol or whatever they call it. So pick a pic with an spi interface so later on you don't have to choose between picking a new one or bitbanging.

    Speaking of SD cards, am I really the only one who would rather have a german chick say "the temperature has dropped below three degrees celsius - drive with care" rather than just that annoying "DING" and the flashing obc message? PCM wav files on a fat16 sd card + i2c interface on a pic + pwm output on a pic + access to audio preamps behind the factory stereo = german chick talking to you. Do it.

    Someone also mentioned can bus. As it happens, this is exactly what I was working on when I was last active on the forums. I needed access to the can bus so I could hear when the door opened so the german chick could greet me. Unfortunately, I got busy with other things and haven't thought about it in months. I seem to recall concluding that I had hit a brick wall until I could find someone with carsoft/gt1 so I could use a logic analyzer to figure out what's going on. It seems that (on my e36) the can bus is not used for normal car operation and is only activated when an appropriate diagnostic tool is hooked up to initiate communication with various modules, so there just isn't any way I can analyze the communication if it isn't communicating. I also seem to recall that it is standard can for the most part, but has some kind of bmw specific initialization that is required before the modules will respond to anything.

    I had previously given up on trying to find information on the e36 can bus, so please somebody chime in if you have any input on it. I'm about to take google for another spin, but I don't expect to find what I need. I only expect to find enough information to remind me of the exact circumstances that caused me to give up before. Also, if anyone has carsoft or a gt1 (or anything else I may not know about which will communicate with the car via can bus) it would be greatly appreciated if you could find another member close by with a logic analyzer and set a date to get together. I'm not attempting to volunteer anyone, but I'm pretty sure that I speak for everyone when I say that can bus will be an extremely valuable addition to a project like this. Those two wires are the most powerful wires in the entire car, feature-wise. You couldn't ask for better bang for your buck. I myself am located in the ArkLaTex area and I will drive for this.
    Last edited by benemorius; 06-25-2010 at 01:45 PM.

Page 7 of 73 FirstFirst 12345678910111213141516173257 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •