Next Project: GT-R MFD on 370 (oil temp/pressure, boost, etc...)

Originally Posted by MotorvateDIY

The factory Nav screen is only usable with the nav unit, as it uses a special 2 wire video interface called GVIF (gigibit video interface)

The visible screen is 7" (measured diagonal) with an outside dimensions of: 7" x 4.5"

At Gregory Brettin's request, I am looking into developing a stand alone 7" LCD screen for his custom "fibreglass cubby screen holder" (my words, not his!)

Driving a large 7" display with a microcontroller is a little challenging.
In order to get 30 frames per second for a smooth display, it requires a data rate of 5.76 million bytes per second (@ 4 bits/colour)

Yes, you could use a Raspberry Pi, but I *hate* the 20-30 second boot up EVERY TIME you start your car.

A microcontroller start up is less than 1 second when you have a 1 second splash screen. (Meaning it is almost an instant start up)

Development of the 7" gauge display will start in the new year.

Originally Posted by redondoaveb

Hey Frank, will the 7" LCD screen you're developing for Greg's cubby screen holder be the wireless set up you're testing that will have the the main controller in the engine compartment?

Originally Posted by MotorvateDIY

The only item under the hood will be the Bluetooth Sensor server. It will send the oil pressure (with support for 7 additional sensors) to the module/display inside the car.

As much as possible, the same hardware and code will be used to drive the 7" display. Since the display has its own "GPU", the load on the main microcontroller will be reduced, but the graphics will need to be recreated from scratch.

Originally Posted by redondoaveb

Perfect, I'll need support for 6 sensors. I'm getting one of Greg Brettin's first cubby display holders

Originally Posted by MotorvateDIY

For planning purposes, what are the 6 sensors?

Originally Posted by redondoaveb

Water temp, oil pressure, fuel pressure, wideband, boost, ethanol content. Fuel pressure is the only one I'm not monitoring currently. All others have aftermarket sensors

Originally Posted by MotorvateDIY

I've made a note.

I have also found a really nice hi-res (1024 x 600 vs stock screen of 800 x 480) 7" touch screen and it is made in North America! (Calgary, Canada)
I've got some more research to do, but I think this is the best option so far.