 
   // Assume that very negative readings are errors
   if (tank_temp < -50 || collector_temp < -50) {
-    Serial.println("Screwy reading, ignoring");
+    Serial.println("# Screwy reading, ignoring");
   }
 
   // If tank is hot enough, pump is off
   else if (tank_temp >= tank_max_temp) {
-    Serial.println("Tank is over max temp, pump off");
+    Serial.println("# Tank is over max temp, pump off");
     no_pump();
   }
 
   // If collector is cold, pump is off
   else if (collector_temp <= collector_min_temp) {
-    Serial.println("Collector is under min temp, pump off");
+    Serial.println("# Collector is under min temp, pump off");
     no_pump();
   }
 
   // If collector is significantly hotter thank tank, pump is on
   else if (collector_temp > tank_temp + on_threshold) {
-    Serial.println("Collector is hotter than tank, pump on");
+    Serial.println("# Collector is hotter than tank, pump on");
     pump();
   }
 
   // If collector is significantly colder than tank, pump is off
   else if (tank_temp > collector_temp + off_threshold) {
-    Serial.println("Collector is colder than tank, pump off");
+    Serial.println("# Collector is colder than tank, pump off");
     no_pump();
   }
 


#include <OneWire.h>
#include <DallasTemperature.h>

// Digital pin to use for the 1-wire sensor bus
#define ONE_WIRE_BUS 3


float tank_max_temp = 140;      // Deg. F; above this, pump is off
float collector_min_temp = 40;  // Deg. F; below this, pump is off
float on_threshold = 15;        // Deg. F differential before pump turns on
float off_threshold = 0;        // Deg. F differential before pump turns off
int interval = 60000;           // Delay in ms between readings

/*
