Merge pull request #3777 from netmindz/HUB75-AC

Add HUB75 support

usermods/rgb-rotary-encoder/rgb-rotary-encoder.cpp

@@ -54,7 +54,11 @@ class RgbRotaryEncoderUsermod : public Usermod
 
     void initLedBus()
     {
-      byte _pins[5] = {(byte)ledIo, 255, 255, 255, 255};
+      // Initialize all pins to the sentinel value first…
+      byte _pins[OUTPUT_MAX_PINS];
+      std::fill(std::begin(_pins), std::end(_pins), 255);
+      // …then set only the LED pin
+      _pins[0] = static_cast<byte>(ledIo);
       BusConfig busCfg = BusConfig(TYPE_WS2812_RGB, _pins, 0, numLeds, COL_ORDER_GRB, false, 0);
 
       ledBus = new BusDigital(busCfg, WLED_MAX_BUSSES - 1);