So, theoretically you could hook up an LCD with your own controller and have a custom arduino Screen!

Err, how is using an lcd with a small display controller any different from using it directly on your arduino? You don't have the IO or the ram to directly drive it that directly. Display controllers give you a serial control of the LCD and have internal screen management.

Update! the virtual screen is published on my website, but i'm still working on it. I'm adding a command prompt so you can send commands from the pc too, that saves a lot of time and a lot of data that will not have to be sent.

and a little video of a simple project with arduino, just to get into the coding

he is using analogue input from the controller to increase/decrease the voltage in the section on the right. as the voltage increases, the light on the bottom gets brighter, and, at a certain voltage, power is able to flow through the resistor that connects to the next light. this process is repeated, so that, as he pushes the joystick forward, more light up and, as he pulls it back, fewer do.

or that's what i think is going on, at least.

yep that's it it's pretty simple, one of the most basic things you can do with it, but i saw a lot of the same project using 1000 if statements, and it thought there had to be a different way of handling this, and there is..

but the ay schmibs told it it must be possible too, now i do it completely with code, but somehow with some transistors and stuff i might be able to make the code smaller, i'll take a look at it

here's a  video about my software-screen: the virtual arduino screen! it's a software driven screen for the arduino, using serial communication.