MPGuino release one workspace - Page 106 - Fuel Economy, Hypermiling, EcoModding News and Forum

CrazyLee · 04-03-2014, 09:28 PM

Quote:

Originally Posted by wyatt

A wiring problem or perhaps some of the other pre-sets need switched. It's been a while since I worked on/with the MPGuino, but my first guess is wiring.

The only wiring problem might be in the Jcar module that squares up the injector pulse. The Jcar module worked quite well giving me a nice 5v square wave on my 'scope. I bought an assembled MPGuino. I tried but couldn't mess up 4 wires.

I was thinking I was running in to a divide by 0 thing.
I am not too worried about the 999 on throttle down. I don't floor it very often.
I am more interested that the 'Guino displays better fuel mileage at higher speeds. It is easy to be tricked into driving too fast.

I did find the code for the Guino s I'll look into that. I can't write code too well but I can read most of it.

Thanks for the help.

CrazyLee · 04-03-2014, 10:21 PM

Quote:

Originally Posted by 2003protege

So if you apply 75%+ throttle, the display instantly pegs at 999? Sounds like your throttle % is affecting the MPG calculation, not necessarily that it "quit" but that the calculation is picking up the throttle. I'm wondering if there isnt' a wiring problem.

It is kinda hard to pick on the throttle. All it does is add more air to the engine. The ECU tells the injectors to fire longer. The rev counter in the ECU tells the injectors to fire more often.

The 'Guino sees faster vss and faster, longer injector pulses.

The MPGuino calculates fuel used from those 2 parameters.
The only thing that may be the culprit is this below. I think I have it set to 500.

Injector DelayuS - Represents the mechanical delay of the injector in microseconds. Advanced topic.

I will try and reduce the number, maybe to 250 and see what happens.
My theory is the code trips up on the bigger number. Maybe I'm thinking backwards.

I'll try it soon.

Kishvier · 06-04-2014, 09:37 PM

Hey guys, new around here. I'm working on my own MPGuino, and I'm looking around and seeing a few different diagrams for the arduino based circuits, could someone direct me to the best and other functional ones? There's a .png on the wiki that is different from the color displayed here. Thanks!

firehawk618 · 03-29-2015, 06:49 PM

I admit I didn't read through all 106 pages here but hope this is the appropriate place to ask.

I am trying to load this on an arduino Uno but am having no luck. I admit I really don't have a clue about coding. Building the hardware is no problem though.

When I copy / paste the code and try to verify it there's always lots of errors as pasted below.

If anyone can help or point me in the right direction I would be really appreciative of that. Thank you!

Arduino: 1.6.1 (Windows 7), Board: "Arduino Uno"

sketch_mar29a.ino:51:17: error: conflicting declaration 'typedef uint8_t boolean'

In file included from sketch_mar29a.ino:51:0:

C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:117:14: error: 'boolean' has a previous declaration as 'typedef bool boolean'

typedef bool boolean;

^

sketch_mar29a.ino:91:15: error: 'prog_char' was not declared in this scope

sketch_mar29a.ino:91:27: error: 'str' was not declared in this scope

sketch_mar29a.ino:397:1: error: 'prog_char' does not name a type

sketch_mar29a.ino: In function 'void setup()':

sketch_mar29a.ino:403:2: error: 'displayFuncNames' was not declared in this scope

sketch_mar29a.ino:432:44: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:434:44: error: 'getStr' cannot be used as a function

sketch_mar29a.ino: In function 'void mainloop()':

sketch_mar29a.ino:541:37: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:549:42: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:553:45: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:559:23: error: 'displayFuncNames' was not declared in this scope

sketch_mar29a.ino:559:47: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:564:42: error: 'getStr' cannot be used as a function

sketch_mar29a.ino:569:23: error: 'displayFuncNames' was not declared in this scope

sketch_mar29a.ino:569:47: error: 'getStr' cannot be used as a function

sketch_mar29a.ino: At global scope:

sketch_mar29a.ino:628:15: error: redefinition of 'char* getStr'

sketch_mar29a.ino:91:8: error: 'char* getStr' previously defined here

sketch_mar29a.ino:628:15: error: 'prog_char' was not declared in this scope

sketch_mar29a.ino:628:27: error: 'str' was not declared in this scope

In file included from sketch_mar29a.ino:49:0:

sketch_mar29a.ino: In function 'void LCD::init()':

sketch_mar29a.ino:755:22: error: variable 'chars' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

Error compiling.

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.

AndrzejM · 03-30-2015, 04:11 AM

Have you tried copy and paste code as a clear text?
What exact code are you uploading to Arduino?

MinnesotaNice · 04-01-2015, 08:27 AM

Quote:

Originally Posted by firehawk618

I am trying to load this on an arduino Uno but am having no luck. I admit I really don't have a clue about coding. Building the hardware is no problem though.

....

I haven't worked much with the Arduino IDE nor this software but I've compiled Arduino code and coded as a software engineer for years....

I'd guess somethings wrong in your include environment. Make sure you have the right version of the IDE and settings on the board, processor type all set as documented in the project code. Can you compile other Arduino IDE projects? Try a simple one.

I looked a while and couldn't find the code you are using.

Allan

Theitguy · 06-08-2015, 09:25 AM

Hey guys!

Check this guy out (bobski), he is working on a copy of the mpguino that actually works with the new ide....

Plus here is a handy guide for the VSS pulses FYI

Cheers
Mitch