Projector and TV Display Setup

Last updated June 2026  ·  4 min read

Every mat gets its own spectator display: a clean, full-screen scoreboard for a TV or projector that mirrors the operator's screen in real time. Parents see the score, coaches see the clock, and nobody crowds the scorer's table.

Opening a mat display

From the operator's screen, click Open Mat Display for your mat. The display opens as its own page, tied to that mat by a ?ring= parameter in the URL — so you can also bookmark it, or open the URL directly on the machine that's physically connected to the TV. Each mat has its own display URL; they run independently.

• 1
  Connect a laptop (or stick PC) to the TV or projector Any device with a modern browser works. HDMI in, browser full-screen (F11).
• 2
  Open that mat's display URL Sign in once if prompted, open the display for the correct mat, and leave it — it updates itself.

What the display shows

• Kumite — competitor names, red/blue scores, the live timer, penalty ladders, senshu, and the division and mat name.
• Kata — the current performer, judge score cards, total and average, and the performance queue with live standings.

How syncing works

The operator's actions are pushed to the server and broadcast live to every display subscribed to that mat — scores, penalties, and timer events appear on the TV the moment they're pressed at the table. The display also recovers its state from the server after a reload, so a browser refresh mid-match comes back showing the current score, not a blank screen.

Streaming with OBS

Streaming the event? Use Copy OBS overlay link to get a per-mat URL you can add to OBS as a Browser Source. The overlay renders the live scoreboard over your camera feed, so your stream carries real-time scores without any manual graphics work.

Hardware tips

• One display device per mat — don't try to switch a single TV between mats mid-event.
• Wired ethernet or a dedicated staff Wi-Fi network beats venue guest Wi-Fi shared with the audience.
• Disable sleep and screen savers on the display machines; a scoreboard that naps during a final is a bad look.