mangavalk/Womier-K87-signal-rgb-plugin
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Send 54-byte packets so no LED is split across packets

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The keyboard applies each packet as it arrives. With 56 colour bytes per
packet, LEDs 18, 74 and 93 straddled two packets and briefly showed a mix of
old and new colour. 54 is a multiple of 3, and 7 x 54 covers exactly LEDs
0..125, so the frame no longer pads past the last LED either.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mangavalkandClaude Opus 5.5 committed 2026-10-28 23:19:39 +01:00
1 parent 9ff5b99fa0
commit 822787ae0f
2 files changed
+11 -8
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Womier_K87_EVision.js
+6 -4
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@@ -24,7 +24,7 @@ export function ControllableParameters() {
{property:"shutdownColor", group:"lighting", label:"Shutdown Color", description: "This color is applied to the device when the System, or SignalRGB is shutting down", min:"0", max:"360", type:"color", default:"#000000"},
{property:"LightingMode", group:"lighting", label:"Lighting Mode", description: "Determines where the device's RGB comes from. Canvas will pull from the active Effect, while Forced will override it to a specific color", type:"combobox", values:["Canvas", "Forced"], default:"Canvas"},
{property:"forcedColor", group:"lighting", label:"Forced Color", description: "The color used when 'Forced' Lighting Mode is enabled", min:"0", max:"360", type:"color", default:"#009bde"},
{property:"lowFPS", group:"lighting", label:"Low frame-rate mode", description: "Sends smaller packets with pauses in between, can improve stability", type:"boolean", default:false},
{property:"lowFPS", group:"lighting", label:"Low frame-rate mode", description: "Sends smaller packets with pauses in between; normally not needed", type:"boolean", default:false},
{property:"frameLimit", group:"lighting", label:"Frame rate limit", description: "Maximum frames per second sent to the keyboard", type:"combobox", values:["Unlimited", "30", "15", "10"], default:"Unlimited"},
{property:"keyTest", group:"lighting", label:"Key test", description: "Sweeps a white line across the keys to check the LED map", type:"combobox", values:["Off", "Column sweep", "Row sweep"], default:"Off"},
];
@@ -57,8 +57,8 @@ const vLedPositions = [
[0, 5], [1, 5], [2, 5], [6, 5], [10, 5], [11, 5], [12, 5], [13, 5], [14, 5], [15, 5], [16, 5],
];
// Highest LED index is 125; 128 slots = 384 bytes = 7 full packets of 56
const LED_SLOTS = 128;
// Highest LED index is 125; 126 slots = 378 bytes = exactly 7 packets of 54
const LED_SLOTS = 126;
export function LedNames() { return vLedNames; }
export function LedPositions() { return vLedPositions; }
@@ -118,7 +118,9 @@ function sendColors(overrideColor) {
}
function writeRGBPackage(RGBData) {
const bytesToSend = lowFPS ? 48 : 56;
// Must be a multiple of 3: the keyboard shows each packet as it arrives, so an LED split
// across two packets briefly flashes a mix of its old and new colour
const bytesToSend = lowFPS ? 48 : 54;
for (let offset = 0; offset < RGBData.length; offset += bytesToSend) {
const data = RGBData.slice(offset, offset + bytesToSend);