I know there's some railroad modelers here that might be interested..

here one of my designs.. a uProcessor driven,  animated  color billboard

here you can see a prototype demo of the 2.2 inch TFT color unit...

the actual display pixel dimensions of the TFT are ~ 1 7/8 " x   1 7/16"  (4.8 mm x 3.6 mm).
and it shows some of the capabilities created with customizeable open source (== free ) PC software..
this display is VGA quality 320x240 pixels and real sharp -
the pictures shown, are in ~ 320x240 pixel size .bmp format,
which I created on my PC, and are stored on an SD card (like they use in digital cameras),
which is embedded in the hardware. .

the design also incorporates an "update" connection to change the software or update the uProcessor software to make changes/additions in display pictures and animation timing etc..

the camera I used to make the demo video produces a video of less quality (grainy) than the picture display in reality.

I created and have sent out to get a few (1.74" x 3.15") PCBs (Printed Circuit Boards) fabricated to implement this hardware.

you can create your own pictures in ~320x240 pixel .bmp format and store them on the SD card - then customize the software to create the rolling billboard display.

you could install this hardware in your own building or billboard structure.

If you're interested send me an email at oldjinks@comcast.net

Chris de Hek.