     scheduler.timer(MEASURE, MEASURE_PERIOD);
     #if DEBUG
         Serial.println(" no ack!");
-        delay(2);
+        serialFlush();
     #endif
 }
 

        Serial.begin(57600);
        Serial.print("\n[roomNode.3]");
        myNodeID = rf12_config();
    #else
        myNodeID = rf12_config(0); // don't report info on the serial port
    #endif

void loop () {
    #if DEBUG
        Serial.print('.');
        serialFlush();
    #endif

    #if PIR_PORT
