Prototype · Android · Tablet
One tablet on the wall beside the table. Tap to score carom or pool, the shot clock runs itself, every shot is recorded, replayable and streamable — no network, no accounts.
Products
One codebase, one amber-on-charcoal palette, two settings: the pool table in an office and the professional billiards hall.
A wall scoreboard for the office pool table
Control · Display · Combined for billiards halls
Office Board
Designed for a finger at arm's length: 45dp controls and Anton numerals you can read from the far end of the table.
Three carom rule sets and four pool rule sets on two dedicated boards: the carom board counts innings and series, the pool board counts racks and race-to.
A three-zone green–amber–red shot clock, extensions per player, pre-match warm-up, handicaps and break selection. Quick mode switches all of it off and just keeps score.
Each match is one append-only action log. Undo deletes the last row and refolds; innings, series, high run, average and the play-by-play all fall out of that fold — nothing is tracked separately to drift.
CameraX records continuously in short segments with a rolling 45-minute buffer, so storage never fills and one bad segment never ruins a match.
The replay screen stitches segments into one timeline and marks every scoring shot, so you jump straight to the high run or the disputed foul.
The camera is shared between recording and the encoder, a broadcast-style score bar is drawn over the frame, and accounts or a custom RTMP target are connected right in match setup.
The tablet runs a tiny web server on the local network. Scan the QR, pick a range, and the clip is cut from the segments and downloaded straight to your phone.
Front, back, USB webcam or RTSP network camera; live preview with latency, resolution, frame rate, test capture and a saved default.
Every match is stored locally with a summary card, carom/pool filters, multi-select delete and a backup export to Downloads.
Vietnamese is the source; English, Korean, Spanish and Chinese are fully translated and key-parity tested — switch inside the app, no system change needed.
Fixed landscape, screen kept awake, and no network layer beyond streaming and clip sharing. Nothing to log in to, nothing to leak.
Every text colour clears 4.5:1 on every ground; a contrast-ratio test suite runs in CI so nobody makes the board hard to read by accident.
Screens
Redrawn in CSS with the app's exact palette and typefaces.
Venue system
A larger programme decomposed into nine sub-projects, built in order on the same foundation.
Status: design approved; the foundation (modules, Hilt graph, design system, test harness) is complete. The items below describe the design, not shipped features.
Control for the referee, a read-only Display for the spectator TV, and Combined — a Control instance rendering the board layout in kiosk mode. Locking to kiosk switches role, not permissions.
Every scoring and clock action is an immutable event. Crash recovery, the audit trail, undo and the playback score overlay are one mechanism, not four.
3-cushion carom, libre, 9-ball and 10-ball behind one interface; a ruleset snapshot is frozen at match start so changing configuration never alters a match already played.
Segmented recording in a foreground service with a storage guard; Media3 playback maps video time to events to jump to any shot.
The Display app receives state in real time over the local network, reconnects on its own, and never exposes a score-correction control.
UUIDs on every record and an outbox table written in the same transaction from day one — the sync engine only has to drain the queue once a server exists.
FAQ
Common questions about this digital billiards scoreboard.
No. The Office Board is fully offline: scoring, recording, replay and history all live on the tablet. Only live streaming and QR clip download use a network, and clip download only needs local Wi‑Fi.
1-cushion carom, 3-cushion carom, libre, 9-ball, 10-ball, 15-ball and 15-ball free pool. The venue system is designed for 3-cushion carom, libre, 9-ball and 10-ball.
In Competition mode each shot has a configurable countdown, each player has a number of extensions, and there is a pre-match warm-up. The clock bar turns green, amber and red so the whole table can see it.
Yes. Video is recorded continuously in segments with a 45-minute buffer. The replay screen marks every scoring shot for direct jumps, and a clip can be cut and downloaded to a phone via QR code.
YouTube, Facebook pages, or any custom RTMP server. A broadcast-style score bar is drawn over the frame so viewers always see the score.
Android 11+ tablets (minSdk 30), fixed landscape, suited to wall mounting beside the table. Built-in cameras, USB webcams or RTSP network cameras all work.
Vietnamese, English, Korean, Spanish and Chinese; switch directly in the Configuration screen without changing the system language.