01 · Sender

Transmit a file

Load any binary file, choose a spatial layout (grid) and temporal cadence (frame interval), and broadcast it as a looping QR stream. Point the receiver's camera at the canvas.

Configuration

Payload

Grid size — spatial multiplexing (N × N)

Frame interval — temporal multiplexing

300 ms per frame ≈ 3.3 fps

Chunk size (raw bytes / QR)

QR error-correction level

Loop cyclicallyreliability via cyclic redundancy

Load a file to start — your QR stream will play here

Codes / frame

—

Total chunks

—

Frames / cycle

—

Est. cycle time

—s

Frames shown

Cycles

idle

raw goodput ≈ — kbps

A META frame carrying file name, size and SHA-256 is sent once per cycle; the receiver needs it plus every data chunk to reconstruct. Denser grids raise raw goodput but demand higher capture resolution and stability. This link is simplex — the sender cannot know when the receiver finishes, so keep looping until the receiver reports completion.