diff --git a/firmware/v01/v01.ino b/firmware/v01/v01.ino
index 32bb033..e1185d3 100644
--- a/firmware/v01/v01.ino
+++ b/firmware/v01/v01.ino
@@ -54,8 +54,8 @@ SoftwareSerial mySerial(BLUE_RX, BLUE_TX); // Start file descriptor and assign p
 
 
 // Macros --------------------------------------------------------
-#define rLEFT digitalRead(LEFT)     	// Read button Left
-#define rRIGHT digitalRead(RIGHT)   	// Read button Right
+#define rLEFT digitalRead(LEFT)		// Read button Left
+#define rRIGHT digitalRead(RIGHT)	// Read button Right
 #define rACT digitalRead(ACT)		// Read button Action
 //----------------------------------------------------------------
 
@@ -141,48 +141,45 @@ void setup()
 // Timer compare interrupt service routine --
 ISR(TIMER1_COMPA_vect)
 {
-	menuState();					// Read buttons act accordingly and update menus
-	if (amp_pin(i_load) > curr_limit)		// If load current more then current limit
+	menuState();								// Read buttons act accordingly and update menus
+	if (amp_pin(i_load) > curr_limit)			// If load current more then current limit
 	{
-		load_status = off;			// Turn off load
+		load_status = off;						// Turn off load
 	}
 		digitalWrite(load_line, load_status);	// Turn load on or off depending on the load_status
 
 
-
-
-	if (mySerial.available()) {
-		ble_data = mySerial.read();	
-//		Serial.write(mySerial.read());	// For debug only
-		switch(ble_data)
+	if (mySerial.available()) {					// If there is incoming serial data
+		ble_data = mySerial.read();				// save it caracter into ble_data
+		switch(ble_data)						// Evaluate caracter
 		{
-		case 'a':
-			dtostrf(parameters[battery_volt], 5, 2, outstr);
-			mySerial.write(outstr);	
-			break;
-	
-		case 'b':
-			dtostrf(parameters[voltage_1], 5, 2, outstr);
-			mySerial.write(outstr);	
-			break;
-	
-		case 'c':
-			dtostrf(parameters[voltage_2], 5, 2, outstr);
-			mySerial.write(outstr);	
-			break;
+		case 'a':												// If caracter is 'a'
+			dtostrf(parameters[battery_volt], 5, 2, outstr);	// convert battery voltage to string
+			mySerial.write(outstr);								// and send it to bluetooth
+			break;												// finish switch statment
 
-		case 'd':
-			dtostrf(parameters[curr], 5, 2, outstr);
-			mySerial.write(outstr);	
-			break;
+		case 'b':												// If caracter is 'b'
+			dtostrf(parameters[voltage_1], 5, 2, outstr);		// convert voltage 1 to string
+			mySerial.write(outstr);								// and send it to bluetooth
+			break;												// finish switch statment
 
-		case 'e':
-			load_status = on;	
-			break;
-	
-		case 'f':
-			load_status = off;	
-			break;
+		case 'c':												// If caracter is 'c'
+			dtostrf(parameters[voltage_2], 5, 2, outstr);		// convert voltage 2 to string
+			mySerial.write(outstr);								// and send it to bluetooth
+			break;												// finish switch statment
+
+		case 'd':												// If caracter is 'd'
+			dtostrf(parameters[curr], 5, 2, outstr);			// convert load current to string
+			mySerial.write(outstr);								// and send it to bluetooth
+			break;												// finish switch statment
+
+		case 'e':												// If caracter is 'd'
+			load_status = on;									// turn ON load
+			break;												// finish switch statment
+
+		case 'f':												// If caracter is 'f'
+			load_status = off;									// turn OFF load
+			break;												// finish switch statment
 		}
 	}
 }
@@ -196,8 +193,8 @@ void loop()
 	parameters[voltage_2] = volt_pin(volt_2);	// Update voltage two value
 	parameters[curr] = amp_pin(i_load);		// Update current load
 
-	
-	
+
+
 
 	if (sd_inserted == no)				// If SD card is not inserted
 	{
@@ -205,7 +202,7 @@ void loop()
 	}
 	else if (sd_rw == on)				// otherwise sd_rw is ON
 	{
-		myFile = SD.open(file_name + ".TXT", FILE_WRITE);	// Open file name and add ".TXT", 
+		myFile = SD.open(file_name + ".TXT", FILE_WRITE);	// Open file name and add ".TXT",
 															// for writing
 		if (myFile)											// if succeds
 		{