fixed package.json

package.json

@@ -8,6 +8,7 @@
     "build": "tsc",
     "watch": "tsc -w",
     "dev": "npm run build && node ./dist/index.js",
+    "start": "node ./dist/index.js",
     "make": "npm run build && pkg --compress GZip ."
   },
   "pkg": {

src/ConvertHandler.ts

@@ -65,8 +65,10 @@ export default class ConvertHandler {
         this.usbdmxInCounter++;
         if (this.outputAllowed) {
             for (let i = 0; i < data.length; i++) {
+                if ((startChannel + i) >= 0 && (startChannel + i) < 512 && data[i] >= 0 && data[i] < 256) {
                     this.artNetSender.prepChannel(startChannel + i, data[i]);
                 }
+            }
             this.artnetOutCounter++;
             this.artNetSender.transmit();
         }