After having built sucessfully a digital speedo and various other guages (fuel/tacho/EGO) for a vehicle, I was wondering if anyone has come accross a circuit/kit for a digital odometer with battery backed or preferrably flash storage of the reading?
I've seen ones that go onto a bike etc, but I want to interface to a display of choice and stores the data when powered off - just like a real car! Something that gives the reading as a serial output so I can interface it to a nice VFD would be fantastic too if possible?
For the speedo, I am using a VDO trans-axle hall effect sensor which gives1000 pulses per km (or close enough) and can feed those pulses into the odometer circuit as long as it is PIC/uP based and it allows for some tinkering :)
I'm not all that experienced with PIC's etc, but can get around OK - except when it comes to storing data in flash or storing large values (cant work out how its done)
Any help would be appreciated!!