 #define PCB01 0
 #define PCB04 0
 #define PCB10 1
+#define PCB11 0
 
 /* 
  * http://a-control.de/arduino-fehler/?lang=en

    // update LED. Off with connected antenna, 3 
    if (antennaStatus == 3) {
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(4, LOW);
    } else {
      digitalWrite(LED_BUILTIN, HIGH);
      digitalWrite(4, HIGH);
    } //endif antenna status
  }


}

void fadeBacklight( int newColor, int oldColor = 0 ) {
  // beware the PWM and ATMega timers. 
  // when green and blue are on different pairs, there's flicker.
  // so v11 of the PCB puts Blue and Green on the same pair.
  // there might be flicker with Red, but since that never gets mixed in 
  // except during a transition, it shouldn't really matter.
  if ( newColor == REDCOLOR ) {
    for (int i = 0; i < 255; i++) {
    Adafruit::setBacklight(i, 255-i, 0);
