Laser Graffiti - Draw on walls with a laser pointer and projector

Laser Graffiti - Draw on walls with a laser pointer and projector

Laser Graffiti is a web-based tool that turns any wall into a canvas. By connecting a projector and webcam, you can draw with a laser pointer, and the projector renders your strokes in real time with various brush styles, ink effects, and 3D spin. It's perfect for artistic expression, interactive presentations, or just fun. No installation needed—everything runs in the browser. Features include six brushes, dripping ink, kaleidoscope mode, and even tic-tac-toe against the computer. Calibration is simple, and it works with green or red lasers. Open source and MIT-licensed.

Point a projector and a webcam at any wall. Draw with a laser pointer. The projector paints your strokes — glowing neon, dripping ink, spinning in 3D.
  1. thot_experiment

    https://graffitiresearchlab.com/blog/projects/laser-tag/#vid...

    everything old is new again, and toys will be toys

  2. Vakaiser

    While this is interesting, what I really wanted to see was more 'graffiti' and less 'laser'.

    Graffiti, fundamentally, is a defacement of public property as a form of artistic self expression. To that end, why not combine this with a laser engraver instead of a laser pointer?

    Imagine hooking this up and then literally carving your graffiti into the side of a brick building. Or burning it into the paint on a metal container car.

    Obviously such a thing has the potential for serious bodily harm and could start building or wild fires inadvertently, to say nothing of the energy consumption requirements such a laser engraver would necessitate.

    Counterpoint: rule of cool.

  3. nico

    Very cool. I remember seeing a video of some people doing this on a whole building… found it: https://m.youtube.com/watch?v=DKbtTPYZEig&t=30s

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2026-08-31