Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

libraries/I2C_LCD02/I2C_LCD02.ino

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+
+/*-----( Import needed libraries )-----*/
+#include <Wire.h>  // Comes with Arduino IDE
+// Get the LCD I2C Library here: 
+// www.4tronix.co.uk/arduino/sketches/LiquidCrystal_V1.2.1.zip
+// Move any other LCD libraries to another folder or delete them
+// See Library "Docs" folder for possible commands etc.
+#include <LiquidCrystal_I2C.h>
+
+/*-----( Declare Constants )-----*/
+/*-----( Declare objects )-----*/
+// set the LCD address to 0x27 for a 20 chars 4 line display
+// Set the pins on the I2C chip used for LCD connections:
+//                    addr, en,rw,rs,d4,d5,d6,d7,bl,blpol
+LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);  // Set the LCD I2C address
+
+/*-----( Declare Variables )-----*/
+//NONE
+
+void setup()   /*----( SETUP: RUNS ONCE )----*/
+{
+  Serial.begin(9600);  // Used to type in characters
+
+  lcd.begin(20,4);   // initialize the lcd for 20 chars 4 lines, turn on backlight
+
+// ------- Quick 3 blinks of backlight  -------------
+  for(int i = 0; i< 3; i++)
+  {
+    lcd.backlight();
+    delay(250);
+    lcd.noBacklight();
+    delay(250);
+  }
+  lcd.backlight(); // finish with backlight on  
+
+//-------- Write characters on the display ------------------
+// NOTE: Cursor Position: (CHAR, LINE) start at 0  
+  lcd.setCursor(0,0); //Start at character 4 on line 0
+  lcd.print("Hello, world!");
+  delay(1000);
+  lcd.setCursor(0,1);
+  lcd.print("4tronix I2C LCD"); // Print text on 2nd Line
+  delay(1000);
+  lcd.setCursor(0,2);
+  lcd.print("0123456789ABCDEFGHIJ"); //Print 20 characters on 3rd line
+  delay(1000);
+  lcd.setCursor(0,3);
+  lcd.print("4th Line of Text");
+  delay(8000);  
+
+// Wait and then tell user they can start the Serial Monitor and type in characters to
+// Display. (Set Serial Monitor option to "No Line Ending")
+/*  lcd.clear();
+  lcd.setCursor(0,0); //Start at character 0 on line 0
+  lcd.print("Use Serial Mon");
+  lcd.setCursor(0,1);
+  lcd.print("Type to display"); */
+
+
+}/*--(end setup )---*/
+
+
+void loop()   /*----( LOOP: RUNS CONSTANTLY )----*/
+{
+  {
+    // when characters arrive over the serial port...
+    if (Serial.available()) {
+      // wait a bit for the entire message to arrive
+      delay(100);
+      // clear the screen
+      //lcd.clear();
+      // read all the available characters
+      while (Serial.available() > 0) {
+        // display each character to the LCD
+        //lcd.write(Serial.read());
+      }
+    }
+  }
+
+}/* --(end main loop )-- */
+
+
+/* ( THE END ) */
+