diff --git a/master/master/lib/led.h b/master/master/lib/led.h
--- a/master/master/lib/led.h
+++ b/master/master/lib/led.h
@@ -28,7 +28,8 @@ enum leds {
 	LED_SIDEBOARD,
 	LED_ACTIVITY,
 	LED_CYCLE,
-	LED_HEAT
+	LED_HEAT,
+	LED_BUZZ,
 };
 
 typedef struct {uint8_t* direction; uint8_t* port; uint8_t pin;} led_t;
@@ -53,10 +54,12 @@ static led_t ledList[] = {
 	{&DDRD, &PORTD, PD6}, // SIDEBOARD
 	{&DDRD, &PORTD, PD5}, // ACTIVITY
 	{&DDRD, &PORTD, PD4}, // CYCLE
-	{&DDRA, &PORTA, PD6}, // HEAT
+	
+	{&DDRA, &PORTA, PA6}, // HEAT
+	{&DDRA, &PORTA, PA7}, // BUZZER
 };
 
-#define NUM_LEDS 11
+#define NUM_LEDS 12
 
 void led_setup();
 void led_on(uint8_t led);
diff --git a/master/master/lib/slavesensors.c b/master/master/lib/slavesensors.c
--- a/master/master/lib/slavesensors.c
+++ b/master/master/lib/slavesensors.c
@@ -144,7 +144,7 @@ void slavesensors_network_scan() {
 	char debugBuf[64];
 	serial0_sendString("Discovered: \r\n");
 	for(int i=0; i<nodeCount; i++) {
-		snprintf(debugBuf, 64, "  %s - %s%s (%u)\r\n", slaveNames[i],slaveAddressHigh,slaveAddressLow[i], nodeCount);
+		snprintf(debugBuf, 64, "  %s - %s%s (%u)\r\n", slaveNames[i],slaveAddressHigh,slaveAddressLow[i], i);
 		serial0_sendString(debugBuf);
 	}
 	serial0_sendString("\r\n");
diff --git a/master/master/master.c b/master/master/master.c
--- a/master/master/master.c
+++ b/master/master/master.c
@@ -40,12 +40,16 @@
 
 int main(void)
 {
-	led_on(LED_POWER);
-	
 	// Initialize libraries
 	time_setup();
 	watchdog_setup(); // enables interrupts
-	led_setup();	
+	led_setup();
+	
+	led_on(LED_POWER);
+	led_on(LED_BUZZ);
+	_delay_ms(1);
+	led_off(LED_BUZZ);
+	
 	gps_setup();
 	serial0_setup();
 	serial1_setup();
@@ -120,6 +124,9 @@ int main(void)
 					char csvHeader[128];
 					csvHeader[0] = 0x00;
 					
+					// Add master data headers
+					snprintf(csvHeader, 128, "Time,BoardTemp,Lat,Lon,HDOP,Speed,GPS SV,");
+					
 					for(uint8_t i=0; i<MAX_NUM_SLAVES; i++) {
 						for(uint8_t j=0; j<MAX_NUM_SENSORS; j++) {
 							int16_t tmp = sensordata_get(i, j);
@@ -136,7 +143,8 @@ int main(void)
 				}
 		
 				logbuf[0] = 0x00;
-				//snprintf(logbuf, 128, "%lu,%d,%u,%s,%s,%s,%s,%s\r\n", time_millis(), sensors_getBoardTemp(),get_timestamp(),get_latitude(),get_longitude(),get_speedKnots(),get_hdop(), get_course());
+				snprintf(logbuf, 128, "%lu,%d,%u,%s,%s,%s,%s,%s\r\n", time_millis(), sensors_getBoardTemp(),get_timestamp(),get_latitude(),get_longitude(),get_speedKnots(),get_hdop(), get_course());
+				serial0_sendString(logbuf);
 				for(int i=0; i<MAX_NUM_SLAVES; i++) {
 					for(int j=0; j<MAX_NUM_SENSORS; j++) {
 						int16_t tmp = sensordata_get(i, j);