 
     rf12_config(0);         // Setup RF
     rf12_sleep(RF12_SLEEP); // and power down
+
+    databuffer[databufferpos++] = 'D';    // init output buffer
 
     scheduler.timer(TASK_ANNOUNCE, 0);    // start the announcements
 }

// Lame floating point format, only powers of ten = mant*10^exp
// 4 bits mantissa (0..15), 4 bits exponent (-8..7)
#define SCALE(mant,exp) (((exp&0xF) << 4) | (mant&0xF))

enum { UNIT_HUMIDITY, UNIT_TEMP, UNIT_VOLT, UNIT_OHM, UNIT_SCALAR, UNIT_TESLA, UNIT_PASCAL };



    for(byte i=0; i<numPlugs; i++) {
        init_measure(plugs[i]);
        // Measure only after a minute, so the user can interrupt
        scheduler.timer(TASK_MEASURE0+i, 600);
    }
    showHelp();
    showConfig();
