Build a Breathing Particle Background with p5.js Using Minimal Code

A tutorial published on DEV Community walks beginners through creating an interactive particle animation using the p5.js JavaScript library, requiring no prior programming background. The guide teaches readers to animate particles with a breathing rhythm using the sin() function, detect mouse proximity with dist(), and produce smooth movement using lerp(). Particles gently scatter when the mouse approaches and gradually drift back to their original positions, creating an organic, immersive feel. The tutorial also covers visual polish techniques such as warm color palettes, transparency, and motion trails achieved by layering semi-transparent backgrounds instead of clearing the canvas each frame. Readers are encouraged to experiment with parameters like particle count, repulsion radius, and return speed, and are given extension ideas such as arranging particles into letter shapes or animating them into a pulsing ring.