Progress1: Software Dyno

[Dave Zug]

Okay I've been working and I have the software reading the parallel 
port bits directly and logging them. I'm not sure of how quick the 
sample rate is.. still a test to do. What I need now is a very simple 
circuit to turn vss into what the parallel port considers a 0 and 1. 

another circuit could turn ABS signal or even the spikes from 
the ground noise from the distrib (another responder idea) into 
parallel voltage transitions it does not matter to the software. 1 
setting maybe.

If a more complex circuit is used.. all 8 bits can be read 
representing the number of transitions sensed in a 0.1 second period 
or something (the basis for this idea is from one of the responces-- 
thanks). 

I think "simple" is a good way to start.. if the electronics portion 
can be left simple and very cheap all the better IMO.

The circuit can be made more complex later.. my goal is to see data 
with the PC as simply as possible as a first step

more to come.
~~~
Dave Z. www.delanet.com/~tgp