A three-minute procedural art exhibition, rendered live by Jet on ESP32-S3. No city, vehicles, story or synthwave palette: ten kinetic installations explore cast metal, concrete, paper, chrome, primary colour, botanical form, woven ink, crystal and ceramic. This is inspired by the procedural art of 64K intros; the firmware is not claimed to be a 64K executable.

The last frame is black, followed by one second of black and a deliberate reboot. All scene geometry is released at each movement; small procedural textures and type masks remain alive for the complete loop. Between scene cuts, animation does not allocate memory. Native preview tools allocate their own output and verification buffers. The exhibition is silent.

The project shares the examples repository's ESP32 scanout, field buffers, parallel rasterization, frame pacing and small top-right numeric FPS overlay. Firmware uses painter ordering with opt-in precise triangle bucket sorting; no depth buffer. Broad surfaces avoid thin-line aliasing on the half-width LCD. Reflection textures approximate a studio environment; they are not ray tracing.

Build like the other examples with ESP-IDF and the shared components. Native rendering: cmake -S tests -B build-preview, build, then ctest --test-dir build-preview --output-on-failure. matter_preview produces a contact sheet; pass seconds and an output PPM path for a particular frame. The video tool in tools/render_video.py makes an S3-layout preview at fixed 60 Hz; encoded video frame rate is not a claim about measured device performance.

Mesh rotations use 34–53 degrees/second on exposed axes to keep Jet's integer Euler steps from reading as slow jitter. Small tilt changes are held fixed or animated briskly. The camera retains smooth floating-point angles. Pale scenes use dark captions. Only a small numeric FPS counter appears at the upper right on hardware; the video does not fabricate a hardware counter.

The opening's rings occupy separate shells around a compact gear cluster, with the pistons outside their sweep. Counterweight's cubes rotate below the lintels and inside the columns. Quicksilver's suspended assembly clears its plinth, and its beads orbit between the deformed core and the inner hoop. These clearances are authored into the motion; they do not depend on enabling a depth buffer. Colour in Space separates the rotating bars behind the rings, with the spheres and rising slats in front; all solid pairs stay clear throughout the animation. The Gyre's golden knot uses low ambient fill and a strong directional key for curved shading and moving Phong highlights. Its outward face winding matches the smooth lighting normals, as does the porcelain knot in the finale.

For a desktop-quality export, build tests/quality into build-quality and pass --quality to the video tool. That target uses full 2880×1920 colour and depth buffers, bilinear perspective textures, and outputs 1920×1280 video. Firmware uses the same scene definitions with the S3's packed buffers.

See VALIDATION.md for hardware measurements and checks.

Research: Farbrausch's procedural tools presentation by Dirk Jagdmann and fr-019: poem to a horse. All demo geometry, textures and motion are original procedural work. Typography is baked from a supplied local font; see tools/prepare_type.py to regenerate.