I have been fooling around with arduino for a few months basically copying other's projects and finally have a project of my own that I would like to work on.
Basically I am looking to measure fuel consumption on a vehicle and combine this with gps data to hopefully yield some useful information. So, I have already successfully combined arduino and gps , and now need to figure out the fuel consumption part. I figure that I need an inline fluid meter with a serial interface. Has anyone ever successfully used such a device with an arduino? Any tips for seeking out a suitable device? thanks in advance for any help you can provide.