Hi everyone,

I’m running a Raspberry Pi 3 A+ together with a Waveshare 5‑inch display, and I’m trying to set up Picotron on Raspberry Pi OS Lite. The goal is to build a kind of “mini Picotron computer” with a keyboard and mouse.

The problem: Picotron always starts in a very small SDL2 window. When I try to switch to fullscreen, it crashes instantly. On Pico‑8 I was able to fix similar issues by adjusting console parameters, but in this case nothing seems to work. Even when I change the framebuffer resolution to 480×270, the window still stays tiny.

Has anyone here run into this issue or found a workaround?

can you adjust the screen res with "sudo raspi-config"

or maybe you need to mess with the native resolution on the pi? I did a brave search and it's AI had this to say.. maybe you can adjust that down to something picotron will like?

"To configure the screen size and resolution for a display connected to Raspberry Pi OS Lite, modifications to the /boot/config.txt file are required. For a 5-inch display, the relevant settings typically involve the dtoverlay parameter to enable the specific display driver, such as dtoverlay=vc4-kms-dsi-5inch (though the exact name may vary).
The framebuffer_width and framebuffer_height settings can be adjusted to match the display's native resolution of 1280x720 pixels.
The hdmi_mode setting is not used for DSI displays; instead, the dtoverlay parameter handles the display configuration."