Data Logging ...

and old projects revived

a work in process... ...still being edited

First... you'll need some way to log what the vehicle does in real-time if you want to make accurate fuel and ignition mapping adjustments. Many ECU's have a logging feature built in specifically for this purpose. Many do not.     So to this end I've pulled out a series of old electronics projects of mine from way back in the late 70's and early 80's. Wow! this stuff still works!  Well.... I'll save that for another page elsewhere.    But one recent project, built on those old analog versions, is a programmable micro controller version of those discrete component digital and analog automotive instruments.     Form those projects, I've written a logging program to record the real-time parameters of my latest project needs.  Namely Fuel injecting my 1975 Triumph Spitfire.  I've now made a major modification to it to read the wide-band O2 meter. The results are the following little ditty.

...preliminary Q & A page for a logger..

The opening screen is just a display of the four tracked parameters. Leave it this way and it's just a display of the parameters.      Click on the little graph icon at the right and the full graph drops down.  The graph is startable, stopable, saveable, and recallable.    By sliding the vertical dotted line left and right, the display show the values in the top windows for analyzing needed adjustments at those parameters.        The four scales at right match up via the colors. The little square boxes on the scales move up and down with the latest readings.      The original design recorded these parameters via a BASIC Stamp 2 Module (n.f.i) programmable micro-controller. The original O2 meter section was scaled for a cheapo hi/lo O2 sensor. I've now converted it to read the Wide Band O2 meter. I've done it two ways, but still can't decide whether to simply read the analog from the meter and let the Stamp convert it, or read in the serial from the TE5301 display, and simply pass it along through the Stamp to this logger application running on a laptop. Ideas! comments?  Yes.... I am planning on releasing versions of this logger program. It's written in VB6 and only uses two API calls for the graph. The Stamp outputs all it's data as serial information, making interfacing very straight forward. Clicking anywhere there is a graph after recalling, moves the dotted line to that point. Where the line falls, the logged data points at that point are displayed in the boxes at the top. Versions of this software, and code (and/or programmed Stamps) may also be available if the interest is there.

 

Introduction	First Models		Sensors		Engine Management Basics
Requirements	Sub-systems		Tuning		Sizing Injectors
gas tank mods	Fuel supply system		My first ECU		F.I. Links - Sources
Special Project Wide Band Oxygen Meter					O2/Tach/Vac/Timing Logger
Other peoples Triumph F.I. Installations/Projects
Special Project   Megasquirt - The Quintessential D-I-Y Fuel Injection ECU
Building a Custom GT6 Manifold				Whitey's F.I'ed Spit6 Project
Building an MGB manifold				Experimental twin bodies on a GT6
Building a twin TB MGB manifold				The other half of the story

 

©1987-2010 All material copyright© Teglerizer 1996-2008	last edited  3/15/08	hits since last reset