Yes. I have swapped FALLING/RISING to RISING/FALLING on the external interrupt pins. That solved the problem of GPH going up when stepping on the accelerator. I have not tried tapping the injector. I'll try that this weekend to confirm that the Fundamental Logic MPGuino is working properly.
Thanks for the info that the ECU flat line when coasting probably won't be handled correctly. At least I know I've got to dig deeper into the code. I'm beginning to get a feel for it.
I use a Scope program that I downloaded from the Web. And I capture images of the Scope display with Paint Shop Pro. That allows me to capture many successive images of just the display by just pressing the right mouse button.
I tapped between a couple of resistors (input-->100K--tap--10K-->ground) to drop the input signal down to a reasonable level for the laptop sound card input.
It works really well at the frequencies we're dealing with here. Try it. You'll like it.
Here's the URL:
Oscilloscope for the Soundcard
