A split-flap board that says whatever you type — a wedding welcome, tonight’s specials, a countdown to the trip, GONE FISHING. Every page of text becomes rows of physical-looking flaps that cascade into place letter by letter whenever the board changes. It can tell the time and count down to a date without touching the network: Departures makes no outbound request while it is running.
ClassicBlack flaps, white letters — the airport original.CreamCream flaps, black letters — the old railway style, centred.
What it shows
Your words. Lines are separated by | and pages by ||, and the /setup page builds that for you from a plain text box where a blank line starts a new page. Drop {clock}, {date} or {countdown:…} into a line and that spot keeps itself current, re-flipping only the cells that changed.
Where it runs
Anywhere, with nothing behind it. No account, no key, no upstream service that can disappear or start charging — the whole board is arithmetic on the URL. Self-hosted it is a read-only container; hosted it is a static page.
What it wants
A board people read at a glance, not a page they study. Lines longer than the board are cut, never wrapped, the same way a real board would; dwell means seconds the page is readable, counted from when the last flap lands.
Setup
Put Departures on a screen.
A browser is genuinely enough — Plash and Fully Kiosk below are conveniences, not requirements.
Any screen
nothing to install
Open the display in whatever browser the screen already has.
Go full screen: F11 on Windows and Linux, ⌃⌘F on macOS.
Or give it a browser of its own, which is what a dedicated panel wants: chrome --kiosk <url> — on macOS, open -a "Google Chrome" --args --kiosk <url>.
Turn off display sleep in the machine’s power settings and walk away.
Works on anything with a browser
Mac desktop
via Plash
Install Plash from the Mac App Store — it renders any web page as your desktop wallpaper.
Menu bar icon → Open URL… and paste the display’s address.
Leave Browsing Mode off so clicks pass through to your desktop as normal.
Plash reloads on wake, so it recovers on its own after sleep.
Displays are ordinary web pages, so anything that can hold one open works: a Raspberry Pi on a monitor, a retired iPad, a Fire tablet, the browser built into a TV.