Demo Gallery¶

Every demo below runs on the desktop simulator — no hardware required. The animations are recorded straight from that simulator (the same SimulatorDisplay your own app uses), so they show exactly what you'll see on screen. The identical code runs unchanged on a CircuitPython HUB75 board.

Run any demo from the repo root:

PYTHONPATH=src python demos/<tier>/<name>.py

Live-data demos

temperature and crypto_dashboard fetch from public APIs when you run them. The previews here were recorded with representative sample data so the display is populated rather than showing a "loading…" frame.

Easy¶

Hello World¶

Hello World demo

The simplest possible app: scroll a greeting across the matrix. No network. demos/easy/hello_world.py — walked through in the Easy tutorial.

Colors¶

Colors demo

A centered word cycling through the rainbow, switching every ~1.5 s. No network. demos/easy/colors.py

Clock¶

A digital HH:MM:SS clock updating every second. No network. demos/easy/clock.py

Drip Splash¶

Drip-splash demo

Every logo LED appears at the top of its column and falls into place, assembling the text drop by drop. demos/easy/drip_splash.py

Reveal Splash¶

Reveal-splash demo

All LEDs light, then wink off at random until only the logo remains. demos/easy/reveal_splash.py

Medium¶

Configurable Message¶

Configurable-message demo

A browser-configurable scrolling message — edit it live in the auto-generated settings web UI and the display updates on save. demos/medium/configurable_message.py

Drip Value¶

Drip-value demo

A large number drips into place, holds, then a fresh value drips in — the pattern for a live metric like a wait time. demos/medium/drip_value.py

Golden Transition¶

Golden-transition demo

The annotated reference for writing your own content-swap Transition, gated by the hardware-feasibility budget. demos/medium/golden_transition.py — see the Transitions guide.

Big Rainbow¶

Rainbow demo

A tall custom BDF font scrolled with a per-letter rainbow that fills the panel height. demos/medium/rainbow.py

Temperature¶

Temperature demo

Live temperature from the open-meteo public API (no key), scrolled and refreshed every 5 minutes. demos/medium/temperature.py — the Medium tutorial.

Hard¶

Crypto Dashboard¶

Crypto-dashboard demo

The showpiece: a full multi-row live dashboard — rainbow title, live weather, a rotating coin, and a scrolling price ticker — fed by two no-key APIs with chunked fetch, web config, and OTA. demos/hard/crypto_dashboard.py — the Hard tutorial.

Showcase¶

Showcase demo

A scripted reel that announces and demonstrates every signature effect: characterful scrolls, theatrical transitions, and palette-animated bitmap text. demos/hard/showcase.py — see the Effects guide.

Swarm Reveal¶

Swarm-reveal demo

A flock of boids flies in, each bird delivering its target pixel to assemble the logo, then disperses. demos/hard/swarm_reveal.py