Hi, i'm trying to extract some values from a car to display them in a digital display ( engine temperature, speed , rpm) and to do that in need to connect the ELM327 (OBD-II port) to my arduino uno. i did my research online and some say you need a USB host shield for the arrduino board , some say you need an FTDI 232, and i don't really know why or how to choose the most suitable one for my project. i would appreciate some enlightenment and thank you
Is this a class project, I answered that question yesterday and it is again appearing almost in the same context.?
yes it is actually me but the context is a little different, my supervisor told me that i'm gonna use the ELM327 instead of the CAN bus shield since they have pretty much the same function( at least in this project) which is the data extraction and "translation" from the CAN network of the car. and here my question is that this elm device can't be directly linked to my arduino board since it doesn't have a USB input( the arduino). he also told me something about an FTD232 i don't really know what that means the closest thing i found online is this : FT232 RL FTDI USB to TTL which is a little odd because it has a mini USB input, but i also read something about a USB host shield. So i don't know what i need exactly i'm really confused.
Post a link to the technical information on this and the instructions. I find to many different devices.
why not try this library! 
hope that helps....
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