● Panel Tuner

Device

not connected

Works from a plain-http origin (localhost dev server) on the same LAN as the device. An https origin cannot reach a http device — browsers block mixed content.

Reference (this canvas = sRGB intent) ↔ LED

White level (WHITE screen only)

255

A screen button overlays the test card on the panel — the running pattern freezes underneath and resumes on Resume pattern (or via K4-hold at the device). This canvas shows the same frame in raw sRGB: your monitor is the design intent, so tune the sliders until the LED gives the same impression. Absolute brightness will differ — match tint, saturation and tonal steps, not nits.

White balance WB R

1.000

WB G

1.000

WB B

1.000

Judge on WHITE. Also drop the white level and check the tint holds at low drive.

Saturation

1.00

Mathematically a no-op on white and gray — judge on COLORS (the 50%-drive bottom row), RAMPS, or a real pattern. 1.00 = identity; this panel family tends to need a strong boost to match a monitor side by side.

Gamma (advanced — the driver already applies CIE1931; leave at 1.0 unless you know why)

Gamma R

1.00

Gamma G

1.00

Gamma B

1.00

config.h snippet (copy this once the values converge)

—

Values set here are session-only — a reboot restores the config.h defaults. To make them permanent, paste this block into firmware/patternflow/config.h and reflash.