add a second strip to control

hoverserial.ino

@@ -289,16 +289,18 @@ void loop()
   digitalWrite(LED_BUILTIN, (timeNow % 2000) < 1000);
   Receive();
   Nunchuk_control();
-
+  strip.clear();
+  strip.setPixelColor(idx_led, strip.Color(128, 0, 0));
+  strip.setPixelColor((NB_STRIP * LED_STRIP) - 1 - idx_led, strip.Color(128, 0, 0)); // second LEDs strip
+  strip.show();
   if (iTimeSend > timeNow)
     return;
   if (cmd2 == 0)
     return;
   iTimeSend = timeNow + ((200 - abs(cmd2)) * 2); // TIME_SEND
-  strip.clear();
-  strip.setPixelColor(idx_led, strip.Color(128, 0, 0));
-  if (cmd2 > 0){
-      if (idx_led < strip.numPixels() -1 )
+  if (cmd2 > 0)
+  {
+    if (idx_led < LED_STRIP - 1)
     {
       idx_led++;
     }
@@ -315,8 +317,7 @@ void loop()
     }
     else
     {
-        idx_led = strip.numPixels() -1 ;
+      idx_led = LED_STRIP - 1;
     }
   }
-      strip.show();
 }