Lumen

Lumen turns an idle LG TV into a quiet display. It shows full-screen imagery with slow transitions, short quotes and “did you know” cards, local weather for your city, and a clock in 12 or 24 hour format. Cards alternate between English and Macedonian.

There is no account and no ads. If the network drops, Lumen keeps playing from a local cache. It runs on LG webOS TVs from webOS 4.0, at 1920 by 1080.

1. Open. Lumen starts with a default feed of imagery and text.
2. Choose a city. Weather is local, and the clock runs in 12 or 24 hour format.
3. Connect your own feed. In the TV settings, enter the address of a feed, plus an access code if it has one.
4. Leave it on. Media is cached on the TV, so playback survives a dropped connection.

An open content contract

A Lumen feed is one HTTP endpoint that returns a documented JSON playlist, optionally protected by an access code. Because the format is published, anyone can point Lumen at their own feed of images and text.

Built to survive a bad connection

Media is cached locally in IndexedDB, so the playlist keeps running offline. The interface is drawn on a fixed 1920 by 1080 canvas and scaled to any screen, with a two-layer crossfade engine for transitions. It is a webOS app built with Preact and Vite.

Lumen is for homes, cafes, waiting rooms and shops with an LG TV that is often idle. It turns the screen into a calm display, and anyone can point it at their own feed of images and text.