Complete rewrite of Application

DisplayManager.h

@@ -0,0 +1,27 @@
+#ifndef DISPLAY_MANAGER_H
+#define DISPLAY_MANAGER_H
+
+#include <LiquidCrystal_I2C.h>
+#include <Arduino.h>
+
+class DisplayManager {
+private:
+  LiquidCrystal_I2C lcd;
+
+  unsigned long lastUpdate;
+  const unsigned long interval = 1000;
+  
+  String lastLine1;
+  String lastLine2;
+
+public:
+  DisplayManager();
+
+  void begin();
+
+  bool ready(unsigned long now);
+
+  void showText(String line1, String line2);
+};
+
+#endif