   toSend += "</ul></p>";
 
   toSend += pageFooter;
-  server.send(200, "text/html", toSend);
+  webServer.send(200, "text/html", toSend);
   delay(100);
 }
 

  "</head><body>\n";
const char* pageDefault =
  "<h2>Welcome to WaterElf</h2>\n"
  "<h2>Control</h2>"
  "<p><ul>"
  "<li><a href='/wifi'>join a wifi network</a></li>"
  "<li><a href='/wifistatus'>wifi status</a></li>"
  "<li>TODO actuator links go here...</li>"
  "</ul></p>"
  "<h2>Monitor</h2>"
  "<p><ul>"
  "<li><a href='/data'>sensor data</a></li>"
  "</ul></p>\n";
const char* pageFooter =
  "\n<p><a href='/'>WaterElf</a>&nbsp;&nbsp;&nbsp;"

  Serial.println("getTemperature()...");

  while(!ds.search(addr)) {
    Serial.print("  no addresses; resetting. ");
    ds.reset_search();
    delay(250);
  }
