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MPG Display

Josh Monroe | April 22nd, 2008

I am almost done building a display for my car that reads data from the car’s OBDII port and computes instant miles per gallon and trip miles per gallon then displays that information on an LCD so that I can tune my driving to get optinal fuel economy.

10 COMMENTS on “MPG Display”

  1. Joe | April 22nd, 2008 12:56 pm

    Awesome, I want to do this as well.

    Grats

  2. Compassman | April 22nd, 2008 5:18 pm

    Please publish the schematics and parts lists. This will be something many people will want!

  3. Josh Monroe | April 22nd, 2008 5:50 pm

    I forgot to mention, it is powered by an Arduino and uses an ELM323 to handle communication with the car’s computer.

  4. kane | April 22nd, 2008 7:31 pm

    i think its an amazing idea

  5. Dominic R | April 24th, 2008 12:29 pm

    Arduino’s are a great platform for small projects like this. They are a C-based microcontroller that has plenty of I/O ports for most smaller projects.

  6. Dick Capriles | April 25th, 2008 7:34 am

    Would like to have the schematic. Sounds great

  7. caddyman | April 26th, 2008 1:07 pm

    Yeah or you could just get a new car that has a mpg calculator built in…hell my ‘97 cadillac deville has it.

  8. Cris | April 30th, 2008 8:54 pm

    Schematic please, this is great for my new project to help measure results http://WWW.WATER4GAS.COM

  9. The Evil Technology | May 4th, 2008 3:41 pm

    Nice one… I want to make a small LCD from camera run on both A/V signal and computer 3-colour and refresh freq signal(the ordinary signal monitor runs on)

    Can you help me?
    my e-mail: Vasillboss@hotmail.com

  10. Alex Curbelo | May 20th, 2008 9:09 am

    The project is great, especially if you publish the schematics and source code.
    There is a similar device on the market called ScanGaugeII which is a small box with an LCD showing four parameters at one time: MPG, MPH, RPM, Fuel Rate, etc.
    It costs 160 USD and it is available at ThinkGeek:
    http://www.thinkgeek.com/gadgets/electronic/8426/
    (I don’t work for ThinkGeek, but I had been eyeing this product)
    If I were you, I would add a sound, a tick or beep that gives you real time feedback of the fuel rate, so that you know how to modulate the gas pedal for better fuel-efficient driving.

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