// Transmission

Throw the wall on the big screen.

Build your grid in a browser, then send it to the biggest panel in the room. Four real paths - pick whichever your TV supports. All free, all working tonight.

Four ways

Shipped

Google Cast: One tap from Chrome or Android. Open the viewer, hit the Cast icon, and pick your Chromecast or Cast-enabled TV. The wall follows onto the panel. (Chromecast needs the site on HTTPS - it is.)
Pair-QR on any TV: No Chromecast? On the TV's own browser open the receiver - a big pair-QR fills the screen. Scan it from your phone and that TV becomes the wall. Works on a hotel-room smart TV.
/bigscreen: Open /bigscreen on a TV browser for the full lean-back layout with a corner pair-QR, then drive it from your phone remote.
LG one-click: The Matrix Browser desktop app has an “Open on my LG TV” button - one click sends the whole theatre to a webOS TV on your network.
iPhone · AirPlay: No Google Cast on iOS - use AirPlay screen mirroring from Control Center to put the whole grid on your Apple TV. No extra setup.

Targets: Chromecast · any TV browser · LG webOS · AirPlay

Then command it

Shipped

Pair: Scan the QR on the wall and your phone becomes the live remote - a code like wm-7c2f. No app required.
Add: Paste new stream links from the couch; tiles appear on the big screen the moment you send them.
Mix: Per-stream volume mixer - solo the caster, duck the crowd, or mute everything in one press.
Shuffle: Reshuffle the layout or play / pause everything without getting up.

Pair code: wm-xxxx · latency: couch-to-wall, instant

Open the wall ▸then cast it · free · no account