MPGuino VSS Pulses/Mile confusion

[sallen]

You are right, the data screens are switched, as you can see in this video.

https://youtu.be/a3CSHsaAL4Q

Another observation I had that may help is that (on a short run at least) current is capable of some level of accuracy.

I drove to the supermarket earlier and Current (large digits) said less than 0 mpg (0.4 or something), however, on the way back I arrived home with it showing 28mpg which is pretty realistic.

[t vago]

Originally Posted by sallen

Another observation I had that may help is that (on a short run at least) current is capable of some level of accuracy.

I drove to the supermarket earlier and Current (large digits) said less than 0 mpg (0.4 or something), however, on the way back I arrived home with it showing 28mpg which is pretty realistic.

Yah, I was wrong in my initial analysis of why CURR and TANK trip fuel economy displays were off. Turns out that I introduced an overflow bug in the fuel economy calculation, in my quest to save 8 bytes of RAM. It's been fixed, of course, and I have also more fully integrated Imperial gallon functionality into the code. Unfortunately, there will be no way to switch on-the-fly between US gallons and Imperial gallons.

I also made that microseconds/gallon parameter a fixed (non-convertable) parameter. For anyone running my code, whether they select US or Imperial gallons, or if they run in metric mode, that microseconds/gallon figure will stay in units of microseconds per US gallon. That's a legacy from the original DCB MPGuino code.

Going to test the code fixes tonight, and will post the corrected code once verification is complete.

[t vago]

Alright - I created another thread to document on-going changes to my version of the MPGuino code. The current version of my MPGuino code may be found here.

I fixed the fuel economy display bug, fixed the compile-time selection of Imperial gallons vs. US gallons (can't see how to implement on-the-fly conversion), and fixed the mislabeled screens.

[sallen]

Many thanks - I have a long drive of a few hundred miles later, so hopefully it will work sweet.

Thanks again.