Live product · Built by Bytesicht
A complete digital signage product: manage content in the browser, deliver it through the backend, and play it on connected screens.
Product design · Frontend & backend · Infrastructure
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Digital signage needs more than an image on a television. Someone has to prepare content, assign it, schedule it, and manage what happens when a display loses its connection.
The management application separates screens, media, and playlists so operators can reuse content across devices. They configure display apps, preview the result, and assign content to a screen without rebuilding each display from scratch.
Bytesicht designed and implemented the operator experience, backend platform, media delivery, and player as parts of one product.
How the system connects
React tools prepare media, playlists, schedules, and display-app configuration.
NestJS manages records and device updates. MongoDB stores application state; R2 stores media.
Preact renders assigned content, persists a local snapshot, and prefetches media.
Backend connectors bring external data into the display payload. Device communication carries updates; media is delivered from object storage. This is a component overview, not a deployment topology.
Engineering decisions
The dashboard and player mount the same display-app bundle. Shared configuration schemas define the editing form and the data the app expects. A new display app extends that contract, rather than requiring two separate rendering implementations.
The player restores a saved snapshot and cached media before reconnecting. Apps that need a live data source are handled separately. This gives cached content a recovery path without pretending every integration works offline.
The native player reports update health only when content plays or the backend confirms a legitimate idle state. The watchdog can distinguish a successful page load from a player that is actually ready to display content.
The Google Calendar connector normalizes events into a shared payload. OAuth connections remain behind the API; the screen receives display data rather than provider credentials. Integration changes stay separate from screen layout.
React / NestJS / MongoDB / Cloudflare R2 / Preact / TypeScript / IndexedDB / Socket.IO
Live software, designed and built as a Bytesicht product. The system described here covers the management application, backend, and player.
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From management tools to connected devices, we can take responsibility for the software between them.
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