It's nice to receive such a great response from the 818 crew!
If you're not sick of the LCD testing videos yet, then have a look at this one.
The tach is now matching engine RPM properly. I've also taken a screen shot
of the HP Tuners log vs. what my program is capturing.
The slight difference is that my software is averaging 10 samples, then displaying
the tach value which makes the needle bounce less, whereas HP Tuners is
recording from the OBDII port.
Attachment 43804
It's nice to be able to see the data side by side, and have a bench mark to
calibrate against. Since the processor only accepts 5 volts input, there is
some voltage reduction and math involved, but it's dead-nuts on the money.
This feature will make a great addition to the kit for troubleshooting, and
race track data analysis (note: the logging is an included function).