How should I start building creative Raspberry Pi projects?

For a display project, the Pi is essentially being used as a tiny desktop computer rather than primarily as an electronics controller. You could write the project with Python and a graphics library, or use a game-development framework if you want more advanced animation. A Pi can also control LEDs and other hardware through its GPIO pins, but you don’t need to start there.

Start by treating the Raspberry Pi like a small Linux computer. Connect it to a monitor, keyboard, and mouse, learn the basics of navigating Linux, and then work through beginner Python tutorials. You can build the city scene as a regular program that draws graphics and uses random timers for trains and lights. Break it into small experiments first, such as displaying a static image, animating one train, and then adding randomized windows.

You don’t necessarily need a Raspberry Pi for the first version. An inexpensive refurbished mini PC running Linux could be faster and sometimes cheaper, especially if you want a large, detailed display. Once you understand the software side, you can decide whether moving it to a Pi makes sense for size, power usage, or convenience.

Modern coding assistants can help explain errors and turn a big idea into manageable steps, but use them as a guide rather than copying everything blindly. Ask for a tiny working example, test it, and then change one part at a time. That approach will refresh your programming skills while giving you visible progress on the project.