diff --git a/boil_kettle/boil_kettle.ino b/boil_kettle/boil_kettle.ino
index 3585559..a268eb7 100644
--- a/boil_kettle/boil_kettle.ino
+++ b/boil_kettle/boil_kettle.ino
@@ -22,35 +22,51 @@
 #include "src/functions.h"
 
 void setup() {
+  /**
+   * Any state information that needs to be kept between reboots
+   * will be stored in EEPROM.
+   *
+   * This will allow modifying these through MQTT communication
+   * later without needing to recompile the code.
+   */
   ConfigData config;
   EEPROM.get(ConfAddress, config);
 
   unsigned long lastRun = millis() - UpdateInterval;
   Serial.begin(9600);
-  rotary.begin();
+
   Ethernet.begin(config.mac, config.ip);
 
+  /**
+   * Setup pins and interrupts/
+   */
   attachInterrupt(digitalPinToInterrupt(I_CLK), doEncoder, CHANGE);
   attachInterrupt(digitalPinToInterrupt(I_DT), doEncoder, CHANGE);
 
-  pinMode(I_CLK, INPUT_PULLUP);
-  pinMode(I_DT, INPUT_PULLUP);
+  rotary.begin();
   Enter.begin(I_BTN);
   boilPWM.begin(O_PWM, config.period);
 
-  mqtt_client.setServer(config.mqtt.broker, 1883);
-  mqtt_client.setClient(net);
-  mqtt_client.setCallback(MessageReceived);
-
+  /**
+   * Kettle temp control
+   */
   KettleController.begin(I_CS1);
   KettleController.Hysteresis(config.hysteresis);
   KettleController.ThreshPWR(config.threshold);
 
-  // if you get a connection, report back via serial:
+  /**
+   * No sense messing with MQTT if we're not on the network.
+   */
   if (Ethernet.linkStatus() == LinkON) {
+    mqtt_client.setServer(config.mqtt.broker, 1883);
+    mqtt_client.setClient(net);
+    mqtt_client.setCallback(MessageReceived);
     ConnectMQTT();
   }
 
+  /**
+   * Fire up the LCD.
+   */
   lcd.init();
   lcd.backlight();