diff --git a/arduino/i2c_slave_with_sensor_reading.ino b/arduino/i2c_slave_with_sensor_reading.ino
index a820baf3..29e7a6d8 100644
--- a/arduino/i2c_slave_with_sensor_reading.ino
+++ b/arduino/i2c_slave_with_sensor_reading.ino
@@ -1,43 +1,25 @@
 #include <Wire_slave.h>
 
 #define REGISTER_0 0x00
-
 #define REGISTER_1 0x01
-
 #define REGISTER_2 0x02
-
 #define REGISTER_3 0x03
 
 #define I2C_ADDRESS_SELF 0x4B
 
-
-
 unsigned int reg_0_value = 41151;  
-
 unsigned int reg_1_value = 1;
-
 unsigned int reg_2_value = 2;
-
 unsigned int reg_3_value = 3;
 
-
-
 uint8_t master_reg; // I2C master read register
-
 uint8_t slave_reg; // I2C slave read register
 
-
-
 void setup()
-
 {
-
   Serial.begin(9600); //Begins Serial communication
-
   Serial.println("Setup for sensor");
 
-
-
   Wire.begin(I2C_ADDRESS_SELF);        // join i2c bus
 
 //  Wire.setClock(400000); // set I2C clock for full speed
@@ -45,101 +27,55 @@ void setup()
   Serial.begin(9600);  // start serial for output
 
 //  digitalWrite(A4, LOW); 
-
 //  digitalWrite(A5, LOW);
 
   Wire.onRequest(requestEvent);
-
   Wire.onReceive(receiveEvent);
-
   pinMode(PC13, OUTPUT);
-
   Serial.println("Starting");
 
 }
 
-
-
 void loop()
-
 {
-
   delay(1000);
 
-  
-
   Serial.println("Read sensor value");
 
-  
-
   reg_0_value = 1;  // set register 0 value to the sensor value
-
   reg_1_value += 1;  // increment a count of how many values read
-
 }
 
-
-
 void receiveEvent(int bytes) {
-
   // Slave reads the first byte to determine which register is concerned
-
   slave_reg = Wire.read();
-
     Serial.print("Slave read register ");
-
     Serial.println(slave_reg);
-
 }
 
-
-
 void requestEvent() {
-
   // Slave uses the the register variable to know what to send back
-
   digitalWrite(PC13, HIGH);
-
   if (slave_reg == REGISTER_0) {
-
     Wire.write((uint8_t *)&reg_0_value, sizeof(reg_0_value));
-
     Serial.print("Slave writing value ");
-
     Serial.println(reg_0_value);
-
   } else if (slave_reg == REGISTER_1) {
-
     Wire.write((uint8_t *)&reg_1_value, sizeof(reg_1_value));
-
     Serial.print("Slave writing value ");
-
     Serial.println(reg_1_value);
-
   } else if (slave_reg == REGISTER_2) {
-
     Wire.write((uint8_t *)&reg_2_value, sizeof(reg_2_value));
-
     Serial.print("Slave writing value ");
-
     Serial.println(reg_2_value);
-
   } else if (slave_reg == REGISTER_3) {
-
     Wire.write((uint8_t *)&reg_3_value, sizeof(reg_3_value));
-
     Serial.print("Slave writing value ");
-
     Serial.println(reg_3_value);
 
   } else {
-
     Serial.println("Slave unknown register");
-
   }
-
   delay(50);
-
   digitalWrite(PC13, LOW);
-
 }