Go Back   EcoModder Forum > EcoModding > Instrumentation > OpenGauge / MPGuino FE computer
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 06-14-2009, 03:21 PM   #1 (permalink)
EcoModding Lurker
Join Date: Jun 2009
Location: Germany
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
OBDuino mod - no need of 'uino'


last week, I found this great "OBDuiono" project on web and I modified the OBDuino32K, because I don't have any arduino hardware.

Now it runs on a Atmega644. I optimized it for (european) C1/Aygo cars (just ISO9141). I had to change some timings and optimized the requests a little: speed/rpm/throttle/intake temperature and map (C1/Aygo don't have a maf) is just requested one time per cycle. But there were many expedient changes in the newest svn-checkout release of obduino32K, so RPM is requested two times again, because ob verifyECUAlive().

I want to use a larger lcd, so I try out a 4x27 Display. Therefore I use 8 corner. But I'll recode the design soon, because it doesn't look good: You can't see the meaning of some values (e.g. "26%").

BTW: The values are not real (just from a "simulated ECU")

You can get my modification here, if you are interessted. It can be compiled by avr-gcc (std=gnu99). You don't need C++ anymore

Thanks to the developer of OBDuino,
Dominik from germany (pleasy excuse my horrible english)

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 06-14-2009, 03:45 PM   #2 (permalink)
Daox's Avatar
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,586 Times in 1,554 Posts
Looks pretty nice. Have you tried it in the car yet?
Current project: A better alternator delete
  Reply With Quote
Old 06-15-2009, 09:29 AM   #3 (permalink)
EcoModding Lurker
Join Date: Apr 2009
Location: Debolt, Alberta
Posts: 78
Thanks: 1
Thanked 2 Times in 2 Posts
To see a display of the names of the PID's (to check what 27% is of what) just press both the left and right buttons at the same time. This will bring up the names for 3/4 of a second.

There are up to 7 PIDs that are used in calculations on every time through the loop. When a user selects them, they are retrieved again just for display. Yes, not optimal at all... but simple.
  Reply With Quote
Old 06-15-2009, 11:57 AM   #4 (permalink)
EcoModding Lurker
Join Date: Jun 2009
Location: outskirts
Posts: 17
Thanks: 0
Thanked 1 Time in 1 Post
Interesting! Your bigger display and Atmega644 remind me about these german projects (full documentation and videos inside):

-> S65-Shield for Arduino (display is taken from S65 - popular GSM phone by Siemens)
S65-Shield - watterott.net

-> ATM based web radio with "big" display
AVR WebRadio - watterott.net

PS if possible pls. share more details about your board
  Reply With Quote
Old 06-19-2009, 10:41 AM   #5 (permalink)
EcoModding Lurker
Join Date: Jun 2009
Location: Germany
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
This week I got some MC33290. I was scared to try it with a simple transistor level converter in car, because I don't want to damage my ECU.
Today I tried it in my car with MC33290 and it works fine!

@Mesuge: Thanks for that hint! Now I ordered such a display (a Sharp LS020..). I found this information/libs to drive it (without arduino):
Display Programming . Maybe I will experiment with that in future. But for a car gauge it's to small.

  Reply With Quote
Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Testing the IAT mod tasdrouille General Efficiency Discussion 6 09-27-2009 04:09 PM
OBDuino and the 328p? gone22 OpenGauge / MPGuino FE computer 0 04-12-2009 09:56 PM
why is gearbox oil mod listed as large improvement in the 65+ mods modmonster EcoModding Central 16 02-10-2009 01:47 PM
Front-end aero mod cephraim Aerodynamics 16 08-17-2008 07:29 PM
Quick and easy licence plate aerodynamic mod :D blackjackel Aerodynamics 7 05-13-2008 07:20 AM

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com