iPhone App help: Thoughts please.

[Turblue]

Hello All...

I am about to release an iPhone app that is aimed at providing conversions for the most common units used by car tuners and enthusiasts.

So far I have 16 conversions.
- PSI to Bar,
- Bar to PSI,
- KPa to PSI
- PSI to KPa
- KPa to Bar,
- Bar to KPa,
- AFR to Lambda,
- Lambda to AFR,
- KPH to MPH,
- MPH to KPH,
- KW to HP,
- HP to KW.
- NM to FT.LB,
- FT.LB to NM,
- Celsius to Fahrenheit,
- Fahrenheit - Celsius.

Can you think of any more? Please email me your thoughts here ([email protected]).

Thanks.

[guy 27]

Hey Wayne.

I've got a similar app called converter on my phone. its pretty much covered all you have listed above (plus many other non car conversion units).

only one i can see it doesn't have is the afr and lambda unit.

[Turblue]

I know there are shitload of converter apps. I just wanted to make one specifically for car people. Besides which, it is a personal goal of mine to learn IOS and publish a few apps.

So, the question still is.... Anything else to add.???

:)

[guy 27]

fuel consumption conversions

[Bloodnok]

fuel consumption conversions

Yes, Including dealing with both US and UK gallons...

[Turblue]

Trouble with fuel consumption conversion is whether you use:

L/100km
or
km/L

....???

[Bloodnok]

Trouble with fuel consumption conversion is whether you use:

L/100km
or
km/L

....???

You have a conversion app. Sounds like a conversion to me :)

[sooty]

Most would use L/100km I would say. Could always do all three: mpg, L/100km and km/L

[Bloodnok]

Most would use L/100km I would say. Could always do all three: mpg, L/100km and km/L

All four. There are two mpg values - depending on which gallon you want to use...

[Turblue]

OK....

MPG (US) - L/100km added. Plus reverse calculation.

[Turblue]

OK....

MPG (UK) - L/100km also added. Plus reverse calculation.

[poita]

Ps to kw and HP. And reverse

[Turblue]

Ps to kw and HP. And reverse

Does anyone actually use that unit..????

[Vectracious]

Does anyone actually use that unit..????

A lot of press in Euro countries do - I know I've read Greek motoring articles and translated German ones and the power figures were all in PS

[poita]

As other Pete said a lot of Euro mags and Japanese also use PS

[Turblue]

As other Pete said a lot of Euro mags and Japanese also use PS

Both added. the list is now:

- PSI to Bar
- Bar to PSI
- KPa to PSI
- PSI to KPa
- KPa to Bar
- Bar to KPa

- AFR to Lambda
- Lambda to AFR

- KPH to MPH
- MPH to KPH

- KW to HP
- HP to KW
- PS - KW
- KW - PS
- PS - HP
- HP - PS

- NM to FT.LB
- FT.LB to NM

- Celsius to Fahrenheit
- Fahrenheit - Celsius

- MPG US - L/100km
- L/100km - MPG US
- MPG UK - L/100km
- L/100km - MPG UK

[poita]

Btw top work Wayne. Let me know when you get it up an running and I'll give it a try for sure :)

[Turblue]

This is a serious learning curve. Thankfully, it is making sense bit by bit. This app is a huge step up on my previous one. Thankfully, the way I have built it, makes it really easy to add extra conversions without a major rewriting of the code.

I'm up to 24 conversions now. I wonder how many more there will be...!!!!

Thank you all for the support and thoughts.

[Turblue]

App has now been uploaded to Apple for review.

Any changes from here will be version 2.

[gman]

Tres interested in this one mate...

Volume (litres to gallons, quarts etc)
How about spring rate conversion. Lb/in to kg/mm??

As its for car people and doing conversions, maybe some calculations as well.

An engine capacity calculator. (bore x stroke x no. of cylinders) etc...
Ratio mixing calculator (100:1, 30:1) for fuel mixing when adding say ethanol/toluene etc to a fuel to get a specific ratio. If you could work it so the you can get an E10 fuel to an E85 ratio with the addition of ethanol that would be helpful.
Dyno/KW power estimate from wheels to flywheel using a drive train loss value. IE: drivetrain loss = 13%, car made 200kw ATW's = 240.9kw or 372.5hp at the flywheel
Just what I can think of off the top of my head

[Turblue]

Sounds like a Version 2.0 for iPad coming up...!!!!

Thanks Glenn.

[poita]

too hard to add this type of thing?

http://www.opelaus.com/forums/showthread.php?31154-Yokohama-Aspect-Ratio-Calculator&p=705691#post705691

[dglewis80]

Or something like this???

http://www.miata.net/garage/tirecalc.html

[Turblue]

Thanks for the ideas!

I'll start work on V2 when I get home.

[Turblue]

The app has now been approved by Apple, and is on the iTunes AppStore.

Thanks for any support and comments. Version 2 will include more, and will likely support iPad as well.

Click here (http://itunes.apple.com/us/app/ecu-tools/id460695011?ls=1&mt=8)

[hazrd]

Next stop... An Android app :p

[gman]

0.99c...Can we get a discount or do a group buy?? (KIDDING!!!!! :) )

Bought it..Will test and come back with comments... :D

[Turblue]

0.99c...Can we get a discount or do a group buy?? (KIDDING!!!!! :) )

Bought it..Will test and come back with comments... :D

Thanks! It was a personal goal to write an iPhone app and put it on the AppStore. If I sold just one, I would consider it a success. This has been a massive learning curve, having never done programming. So to get this far in a month has been awesome.

I look forward to input for the next version!


Next stop... An Android app :p

Man, I am just scratching the surface with Xcode and Cocoa etc. you want me to do Android too? :)

[Feelinlucky75]

Please.. :D

[dglewis80]

Next stop... An Android app :p

+1

[poita]

Ease up on him guys, this is only his second iPhone app.

That is an achievement all in itself, just hold off until I get mine setup before we harras him too much about an android version ;)

[hazrd]

Just stirring :p

Will look at it on the missus iPhone :)

[Turblue]

Thanks again for the support and ideas.

I'll look into an Android version, but without a development device it will be hard.

[Vectracious]

Hope it goes well for you Wayne :)

[poita]

Thanks again for the support and ideas.

I'll look into an Android version, but without a development device it will be hard.

If you where serious about doing it I could supply you with one

[Turblue]

If you where serious about doing it I could supply you with one

Funnily, I had an email yesterday from a company in the USA offering to convert ECU Tools over to Android for a fee. It's getting a little bit odd, with the number of emails etc that have started since I put apps on the AppStore. Typical I guess.....

Anyway, here is the mockup of the next version which has three input fields to allow for more complex calculations. When you select a conversion, labels appear under each field to indicate what they are. This is first draft.

http://img192.imageshack.us/img192/3700/version2y.jpg

[Turblue]

And this one.....

http://img42.imageshack.us/img42/9620/version21.jpg

[Turblue]

OK.... The new code is done, and ready to roll. All I need now are extra conversions.

The list I have so far to add is:

- Engine displacement,
- ratio conversion,
- gallons/quarts etc to liters/mls etc,
- pipe cross sections (2.5” pipe vs. 3.0” pipe)
- Airflow conversions (CFM to lt/min etc)
- pressure vs. temp ratios for air density
- cubic inch to cc’s / liters etc
- injector volumes cc/min to lbs/min to lbs/hr to lts/hr to gallons/hr
- average speed calculator for lap times (2min lap and track is 4kms etc)
- Drivetrain loss

[gman]

I like those conversions!! :)

[Turblue]

I like those conversions!! :)

Geez.... I wonder where those suggestions came from...!!!!

[Turblue]

Just for you Glenn...!!!!

http://img12.imageshack.us/img12/9807/injectorc.png

[gman]

Ahhhh I can't see the pic!!!!

Damn you imageshack..Damn you to hell... ;)

[Turblue]

Ahhhh I can't see the pic!!!!

Damn you imageshack..Damn you to hell... ;)

Just doing the Air Density one now.....

Click Here (http://www.fuzzy-puppy.com/page4/index.html)

[gman]

I like it!!! :thumbs:

Top work mate..

[Turblue]

I like it!!! :thumbs:

Top work mate..

Ok.... Density (lb/ft3) = 2.7 * (PSI + 14.7) / (((1.8 * Celsius) + 32) + 459.7)

Wanna check that for me? Do you want a different density unit?

I can add altitude if you find me the formula...!!!

[gman]

If you can adjust for altitude that would be good...

kg/m3 can you do that too??

equation looks right but will check and come back

[Turblue]

Just give me the formula (and any others) and I'll whack them in.

My app is set up to work with up to three variables.

[gman]

Will search around and see. I had a whole stack at home so might have to wait until tomorrow when I can have a look. Love it..

[Turblue]

The list of conversions is now (44 conversions):

- PSI to Bar
- Bar to PSI
- KPa to PSI
- PSI to KPa
- KPa to Bar
- Bar to KPa

- AFR to Lambda
- Lambda to AFR

- KPH to MPH
- MPH to KPH

- KW to HP
- HP to KW
- PS - KW
- KW - PS
- PS - HP
- HP - PS

- NM to FT.LB
- FT.LB to NM

- Celsius to Fahrenheit
- Fahrenheit - Celsius

- MPG US - L/100km
- L/100km - MPG US
- MPG UK - L/100km
- L/100km - MPG UK

- Engine Displacement,
- Cubic Inches - Litres,
- Litres - Cubic Inches,
- Gallons - Litres,
- Litres - Gallons,
- Quarts - Litres,
- Litres - Quarts,
- Pints - Litres (US),
- Litres - Pints (US),
- Pints - Litres (UK),
- Litres - Pints (UK),
- CFM - Litres/Min,
- Litres/Min - CFM,
- CC/min - Lb/hour,
- Lb/hour - CC/min,
- Injector Flow (80% DC),
- Driveline Loss,
- Cross Section Area,
- Air Density,
- Current Draw.

[Turblue]

ECU Tools V2.0 (http://itunes.apple.com/app/ecu-tools/id460695011?mt=8) is now available. For those that did download it, you should do an AppStore update.

Thanks for the help and ideas everyone!

[gman]

Got it and looks really good.

Only thing is it fails to update once the values are input and the user marks "DONE". You need to switch between conversion types to get it to update.

EDITED: It works, I don't...Should have read the destructions a little more closely

[Turblue]

Tap the title image.


What's New in Version 2.0

- Added extra conversions,
- Added multiple unit conversions,
- Tapping the Title will now also perform the calculation.

[gman]

Ahhh...Roger Wilko over and out...It works!!! :D

Just loaded it and never read the destructions....

[Turblue]

I added that "feature" after you mentioned it to me.

[gman]

Cool...See I helped mum!!! :lol:

I've just played around with it and its really good. No problems and some great conversions in there. I'll be using it for sure....

[Turblue]

Cool...See I helped mum!!! :lol:

I've just played around with it and its really good. No problems and some great conversions in there. I'll be using it for sure....

Yes Glenn, your feedback was very helpful and constructive! I thank you for it.

[gman]

A pleasure and an honor sir...

My hat is off to you for building something useful that works... :thumbs:

[Vectracious]

Get a room you two :p

Sent from the MAGI.

[gman]

I like it public.... ;)

[benzino]

some more ideas...
http://www.daewootech.com/forum/viewtopic.php?f=19&t=5682