 void loop () {
     #if DEBUG
         Serial.print('.');
-        delay(2);
+        serialFlush();
     #endif
 
     #if PIR_PORT

            #if DEBUG
                Serial.print(" ack ");
                Serial.println((int) i);
                delay(2);
            #endif
            // reset scheduling to start a fresh measurement cycle
            scheduler.timer(MEASURE, MEASURE_PERIOD);

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