portal

Hexagonal LED portal: five WS2812 matrix panels on Pico UDP adapters, plus a bare floor.

Reference: photo of the physical portal — upright flat-top hex arch, dark frame, red LED grids on each face.

        ___[2]___
       /         \
     [1]           [3]
      |             |
     [0]           [4]
      \___________/
         floor

WS2812 control for Raspberry Pi 5 (orchestrator) and Pico panel adapters.

Panel IPs

Five Pico panels on 10.1.1.10–10.1.1.14. Examples drive all 5 by default.

Panel sizes

Panels are 9 rows tall; width varies by panel. Edit PANEL_WIDTH_BY_INDEX in leds/array_config.py:

Panel	Face	IP	Size	LEDs	Firmware
0	bottom-left	10.1.1.10	9×39	351	make deploy PANEL_ID=0
1	top-left	10.1.1.11	9×45	405	make deploy PANEL_ID=1
2	top	10.1.1.12	9×45	405	make deploy PANEL_ID=2
3	top-right	10.1.1.13	9×45	405	make deploy PANEL_ID=3
4	bottom-right	10.1.1.14	9×39?	351	make deploy PANEL_ID=4

Panels 0→1→2→3→4 run clockwise from bottom-left (PORTAL_PANEL_ORDER_CLOCKWISE in leds/array_config.py).

Panel 4 may be 38 or 39 wide — find the exact width:

make deploy PANEL_ID=4
pipenv run python examples/panel_sync_test.py --test width --panel-index 4

Last column that lights → set PANEL_WIDTH_BY_INDEX[4] in leds/array_config.py to column + 1 (342 LEDs for 38, 351 for 39). Firmware takes pixel count from each UDP frame — no re-flash for width changes.

Animations render at each panel's own width automatically.

Examples

Portal web simulator

Preview all five panels in the browser (3D interior view + flat layout map). Uses the same Python animations as the hardware.

pipenv install fastapi "uvicorn[standard]"
pipenv run python examples/portal_simulator.py
# open http://localhost:8765/

Dev mode (default): uvicorn reload for Python changes, browser auto-reload when web/ files change. Disable with --no-reload or --no-browser-reload.

Options: --host 0.0.0.0 --port 8765 to view from another device on the network.

Open via the simulator URL (http://…:8765/) — do not open index.html directly from the filesystem (file://), or module imports will fail.

Frontend uses Web Components and ES modules under web/js/:

Module	Role
<portal-app>	Root layout, frame streaming
<portal-controls>	Sidebar settings
<portal-viewport>	Three.js 3D scene
<portal-schematic>	Flat layout map
<portal-panel>	Single LED matrix canvas

Pico panel (UDP)

WS2812 defaults: GP28 (strip 0) and GP27 (strip 1). Override over UDP:

pipenv run python examples/panel_color_test.py --panel-index 0 --pins 28:405,27:351

Command	What it does
pipenv run python examples/panel_rgb_cycle.py	Red / green / blue on all 5 panels
pipenv run python examples/panel_color_test.py	One-shot RGB + white test
pipenv run python examples/panel_test.py	Layout tests (corners, rows, chase)
pipenv run python examples/panel_sync_test.py	Positioning + sync across all panels
pipenv run python examples/panel_animations.py	All animations on all panels
pipenv run python examples/panel_animations.py rolling	One animation
pipenv run python examples/panel_text.py	Show your name
pipenv run python examples/animations.py --panel	Same as panel_animations

Single panel only:

pipenv run python examples/panel_animations.py --panel-index 1   # 9×45 @ 10.1.1.11

Pi SPI (bench / single matrix)

Optional local SPI tests via rpi5-ws2812 on GPIO 10 — not used for the five portal panels.

405 LEDs need a ~10 KiB SPI frame. Default spidev bufsiz (4096) only updates ~169 LEDs — run once:

pipenv run python examples/setup_spi_bufsiz.py --install   # sudo

Command	What it does
pipenv run python examples/spi_rgb_test.py	Red / green / blue over SPI
pipenv run python examples/spi_panel_test.py	Corners, rows, chase — verify all LEDs
pipenv run python examples/animations.py	All animations on local matrix
pipenv run python examples/matrix_demo.py	Rainbow only
pipenv run python examples/led_demo.py	Dual-strip chase + rainbow

Colors use logical RGB everywhere ((255,0,0) = red). Pico firmware remaps to GRB on the wire; Pi SPI uses the same swap when needed. The web simulator stays logical RGB.

# MicroPython on Pico — this is the reference:
np.fill((255, 0, 0)); np.write()  # red

pipenv run python examples/panel_rgb_cycle.py  # same colors over UDP

Firmware

Pico SDK sources live under firmware/pico/ (see that README for the UDP protocol).

make deploy PANEL_ID=0
make reset && make monitor