914 Analog to Digital Integration…, Has Anyone Done it? |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
914 Analog to Digital Integration…, Has Anyone Done it? |
jesiv |
Mar 30 2008, 08:45 PM
Post
#1
|
Senior Member Group: Members Posts: 552 Joined: 5-August 07 From: Pensacola/Milton, Florida Member No.: 7,975 Region Association: Northern California |
Ok so I am a computer software geek. I have been creating mobile (12V)computer applications in a completely different market. But the idea of adding software to my 914 is really inspiring me. I would love to be able to get OBDII type info from 914 analog sensors installed on stock instrumentation, FI systems and cool third party user components (analog or digital).
So who is doing this? Or is my wife correct... Who cares! Regards, James |
Dave_Darling |
Mar 30 2008, 10:16 PM
Post
#2
|
914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Dunno who is doing it, but it sure sounds neat!!
--DD |
Dr. Roger |
Mar 30 2008, 10:29 PM
Post
#3
|
A bat out of hell. Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California |
Hey James,
It's funny, just after you called I remembered I just received an email from this guy..... This guy, Sergey Yurish, writes over @ sensorportal.com. Their brain trust has helped me on a project of my own. Here is the article describing the analog to digital converter which uses low voltage. http://www.sensorsportal.com/HTML/DIGEST/P_243.htm I'd love to hear more about the details of your project. Sounds exciting, especially if it can be used on a 914 for performance gains.... (IMG:style_emoticons/default/piratenanner.gif) Whatcha' building????? (IMG:style_emoticons/default/popcorn[1].gif) |
Slider |
Mar 30 2008, 10:30 PM
Post
#4
|
Problems are like cockroaches you find 1 and theres a 100 more Group: Members Posts: 223 Joined: 11-March 07 From: Fort Collins Colorado Member No.: 7,591 Region Association: Rocky Mountains |
I agree it sounds cool. i would be interested..
|
Elliot Cannon |
Mar 30 2008, 10:31 PM
Post
#5
|
914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
I would offer an opinion and advice... if I knew what you were talking about. (IMG:style_emoticons/default/av-943.gif)
|
yarin |
Mar 31 2008, 06:57 AM
Post
#6
|
'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
For all that effort just go to SDS or Megasquirt. You can log everything under the sky!
|
jesiv |
Mar 31 2008, 09:49 PM
Post
#7
|
Senior Member Group: Members Posts: 552 Joined: 5-August 07 From: Pensacola/Milton, Florida Member No.: 7,975 Region Association: Northern California |
Easy is well, just too easy! I want to do it the hard way. I just like banging my head against a wall (IMG:style_emoticons/default/headbang.gif) . Why else would I have purchased my third teener (and of course I had to pick an l-jet!).
I think it would be totally cool to sample and record the inputs and outputs of the ecu in “real-time”. Obviously once you had normal operating parameters identifying in “real-time” component or system level deviations would be a piece of cake. Also, adding new sensors would be totally exciting! For example adding an O2 sensor would enable you to really tune the exhaust gas numbers (closed system)… Tracking ecu data history for component trends would be really interesting in spotting potential component failures. Etc… I realize that OBDII and current technology provides what I am describing and more. I just want a modern approach to solving the non-digital 914 problem (and knowing when I have solved the problem) of “why my engine is running rich or lean or idles rough”. I want to plug a computer interface into the harness have the computer tell me what component is out of spec (e.g. fault code!) and of course a lot of other cool stuff. However once you can control the ecu responses based upon ecu inputs. We are know at a another level. Once there, creating driving modes street, track and smog level based upon ecu inputs is totally doable – we could all be sharing digital engine performance profiles. So has anyone done or is working on anything remotely similar to what I am describing? Is my wife correct… No one cares. (IMG:style_emoticons/default/WTF.gif) Rodger, thanks for the info I found a lot of new information. Regards, James |
solex |
Mar 31 2008, 09:58 PM
Post
#8
|
Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
How about digital to analog. I just purchased my first turntable... and cannot wait to spin some records.
Cool idea, need an a/d converter not sure how you would control the programming on a stock 914 as it is mostly hard coded in the circuitry (am I wrong here?) |
jesiv |
Mar 31 2008, 10:07 PM
Post
#9
|
Senior Member Group: Members Posts: 552 Joined: 5-August 07 From: Pensacola/Milton, Florida Member No.: 7,975 Region Association: Northern California |
How about digital to analog. I just purchased my first turntable... and cannot wait to spin some records. If you mean chaning the ecu output based upon FI component inputs then yes. If you mean can I create an album. Yes but you will need this device Attached image(s) |
Mark Henry |
Mar 31 2008, 10:34 PM
Post
#10
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
The ECU is old....not a single IC chip, no code, nada.
If you got a megasquirt you could write your own program, you do build it yourself. I have an SDS and a wideband, I can change/watch/log anything enginewise if I want. But I don't even bother with it, once set it comes off and sit's in the glovebox. |
chris914 |
Mar 31 2008, 11:48 PM
Post
#11
|
Member Group: Members Posts: 489 Joined: 24-July 04 From: San Diego, CA Member No.: 2,393 Region Association: Southern California |
I bought this for my new motor when I get it installed. What I thought would be one month is now four. (IMG:style_emoticons/default/headbang.gif)
http://www.innovatemotorsports.com/products/kits.php It will allow input signals from a CDI box as well as other analog inputs to be recorded into a computer. |
bperry |
Apr 1 2008, 01:31 AM
Post
#12
|
Lurker Group: Members Posts: 477 Joined: 16-February 04 From: Dallas, Tx Member No.: 1,661 |
For all that effort just go to SDS or Megasquirt. You can log everything under the sky! I agree. Consider this. Suppose you did build what you are talking about. (which would be quite complicated by the way). Now what would you do with sampled data? The stock FI system is completely analog and for the most part hardwired. If you want to change something, you have do things like swap out resistors and capacitors. I'd say if you really want to play with things, move to MegaSquirt. This can do the things that it sounds like you want to do. Here is the the link to the MegaSquirt web site if you haven't been there yet. MegaSquirt --- bill |
stateofidleness |
Apr 1 2008, 02:04 AM
Post
#13
|
Senior Member Group: Members Posts: 810 Joined: 1-September 07 From: Canyon Lake, Texas! Member No.: 8,065 Region Association: None |
my buddy and i use software to reprogram his ecu on the fly and monitor all kinds of stuff in real time. he uses openecu and a special cable that hooks his obdII port to his laptop
check out: http://openecu.org/index.php?title=Main_Page not sure if it will help with any conversion stuff, but its interesting nonetheless |
Dr Evil |
Apr 1 2008, 02:57 AM
Post
#14
|
Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Do it! This would be cool, even though it is not necessary IMHO, I would be interested in seeing it done if you want to tinker (IMG:style_emoticons/default/smile.gif)
|
Bartlett 914 |
Apr 1 2008, 12:54 PM
Post
#15
|
Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
(IMG:style_emoticons/default/agree.gif)
I think it would be cool also. Even if only Dwell, timing, battery voltage and the CHT were digitized. |
-JR- |
Dec 25 2008, 02:17 PM
Post
#16
|
Life goes faster at 150MPH Group: Members Posts: 276 Joined: 12-May 04 From: Victoria BC Canada Member No.: 2,055 |
This might be a dead thread, but I'm looking at a PICO ITX on board computer to integrate with the 95 993 3.6 I'm putting in my teener. I also plan on integrating all the other goodies like GPS navigation and entertainment radio in the on board computer. I figure with the limited dash space on a 914 that having a software driven interface would allow me to have any engine data I want at a touch of a... well touch screen.
You can buy a retractable touch screen system that would fit in the radio hole (if it's been cut out) for around $150 --> $500 depending on what you want. You can put an Pico ITX computer together for around $300 or so. My biggest hurdle will be comming up with the software to talk to the OBD-I Motronic unit. The 993 units use a non-standard code format as well. I'm currently investigating going to a 96+ OBD-II unit. I hear most 993 guys are trying to go the other way because the 95 OBD-I unit is chipable but the 96+ OBD-II units have the EEPROM's soldered directly into the boards. Got to go open presents! bye bye |
Rusty |
Dec 25 2008, 05:05 PM
Post
#17
|
Wanted: Engine case GA003709 Group: Admin Posts: 7,942 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch |
I have nothing to add... but nice use of the Search feature. (IMG:style_emoticons/default/smilie_pokal.gif)
|
Bill D |
Dec 26 2008, 02:33 PM
Post
#18
|
Member Group: Members Posts: 66 Joined: 1-August 06 From: North Carolina Member No.: 6,558 |
In order for the sensor data to be of value the characteristics of the sensors must be known. Is there any information that gives Bosch sensor ranges? The Bentley manuals only state that the resistance is inversely proportional to the temperature. Or do the sensors need to be calibrated using thermocouples, mechanical gauges, ...?
|
wertygrog |
Dec 26 2008, 03:24 PM
Post
#19
|
wertygrog Group: Members Posts: 428 Joined: 12-November 05 From: Long Beach, CA Member No.: 5,114 Region Association: Southern California |
This is actually pretty easy using products meant for experimental aircraft...they do stuff like this all the time. Here's part of one system I've installed, the Enigma by MGL Avionics. Converts whatever you want to whatever you want. Here's a picture. (IMG:style_emoticons/default/wink.gif)
Attached image(s) |
-JR- |
Dec 28 2008, 12:37 AM
Post
#20
|
Life goes faster at 150MPH Group: Members Posts: 276 Joined: 12-May 04 From: Victoria BC Canada Member No.: 2,055 |
This is actually pretty easy using products meant for experimental aircraft...they do stuff like this all the time. Here's part of one system I've installed, the Enigma by MGL Avionics. Converts whatever you want to whatever you want. Here's a picture. (IMG:style_emoticons/default/wink.gif) So what do you do for soft-gauges to run with this? I'm trying to set mine up to copy the stock black and red VDO analog gauges. Thanks |
Lo-Fi Version | Time is now: 11th June 2024 - 08:14 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |