A while ago I had watch a video of someone make a vga graphics card, as a result I wanted to make something with vga, but I don't have the knowledge to do it. I ended up with a project on simple circuit and made it. After I made it I was bored with the stale text of the screen and decided to make a game. I'm not the most creative person, but my friend had a fun game that I decided to recreate and stick on a vga screen.

The libraries are here you will need the vga and Adafruit graphics.

EXPANDED TECHNICAL DETAILS

Retro 8-Bit Video Generation

VGA Boulder Crash explores the limits of Arduino performance by generating a real-time VGA video signal entirely in software.

• High-Speed Signal Timing: Leveraging the VGAx or TVout library, the Arduino bit-bangs the "HSYNC" and "VSYNC" pulses required by standard monitors. This requires cycle-accurate code to ensure the image remains stable at 640x480 resolution (internal render resolution is lower).
• Physics and Collision Logic: Manages a simple game engine where "Boulders" (bitmaps) fall from the top of the screen. The Arduino calculates the bounding-box collision between the player and the boulders on every frame.

Hardware Engineering

• R-2R Resistor DAC: Highlights the use of a simple resistor network to convert the Arduino's digital pins into the analog color signals $(R, G, B)$ required by the VGA standard.