diff --git a/master/master/lib/serparser.c b/master/master/lib/serparser.c
--- a/master/master/lib/serparser.c
+++ b/master/master/lib/serparser.c
@@ -114,7 +114,7 @@ int serparser_parse(void)
 			else // Not start of frame, reset
 			{
 				#ifdef DEBUG
-				//serial0_sendString("invalid\r\n");
+				serial0_sendString("invalid\r\n");
 				#endif
 				setParserState(STATE_RESET);
 				return PARSERESULT_NODATA; // no valid start bit; better luck next time. run the function the next time around the main loop.
@@ -135,7 +135,7 @@ int serparser_parse(void)
 			else // Transmission is intended for another module; reset
 			{
 				#ifdef DEBUG
-				//serial0_sendString("bad dest\r\n");
+				serial0_sendString("bad dest\r\n");
 				#endif
 				setParserState(STATE_RESET);
 			}
@@ -157,11 +157,11 @@ int serparser_parse(void)
 		{		
 			if (byte == ']') // End of frame
 			{
-				//#ifdef DEBUG
+				#ifdef DEBUG
 				serial0_sendString("eof\r\n");
 				sprintf(debugBuff, "%d B, sum=%d\r\n", payloadLength, checksumCalc);
 				serial0_sendString((debugBuff));
-				//#endif
+				#endif
 				
 				receivedPayload[payloadLength] = 0; // null-terminate string for atoi
 				
@@ -200,12 +200,16 @@ int serparser_parse(void)
 		{
 			// TODO: Compare checksums
 			if(byte == checksumCalc) {
+				#ifdef DEBUG
 				serial0_sendString("check\r\n");
+				#endif
 				setParserState(STATE_RESET);
 				return PARSERESULT_PARSEOK;
 			}
 			else {
+				#ifdef DEBUG
 				serial0_sendString("bcheck\r\n");
+				#endif
 				setParserState(STATE_RESET);
 				
 				return PARSERESULT_FAIL;
diff --git a/master/master/master.c b/master/master/master.c
--- a/master/master/master.c
+++ b/master/master/master.c
@@ -59,12 +59,12 @@ int main(void)
 	//serial0_sendString("\r\n\r\n---------------------------------\r\n");
 	//serial0_sendString("HAB Controller 1.0 - Initialized!\r\n");
 	//serial0_sendString("---------------------------------\r\n\r\n");
-	serial0_sendString("\r\n\r\nHELLO.\r\n\r\n");
+	//serial0_sendString("\f\r\n\r\Hello.\r\n\r\n");
 	
 	led_on(POWER);
 	
 	// Buffer for string operations
-	char logbuf[32];
+	char logbuf[16];
 	
 	// Software timers	
 	uint32_t lastAprsBroadcast = 0;
@@ -74,7 +74,7 @@ int main(void)
 	int parseResult = PARSERESULT_NODATA;
 	
 	// Write CSV header to SD card
-	logger_log("ProgramTime,LastAprsBroadcast,LastLog\n");
+	//logger_log("ProgramTime,LastAprsBroadcast,LastLog\n");
 	
 	while(1)
     {
@@ -82,8 +82,8 @@ int main(void)
 		if(time_millis() - lastLog > LOGGER_RATE) 
 		{
 			led_on(STAT);
-			//snprintf(logbuf, 32, "%lu,%lu,%lu,\r\n", time_millis(), lastAprsBroadcast,lastLog);
-			//logger_log(logbuf);
+			snprintf(logbuf, 16, "%lu,%d,\r\n", time_millis(), sensordata_get(HUMIDITY));
+			logger_log(logbuf);
 			led_off(STAT);
 			lastLog = time_millis();
 		}