Differences

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--- arduino:lcd [2013/03/28 09:04] – photonicsguy
+++ arduino:lcd [2014/04/07 11:54] – photonicsguy
@@ Line 12: / Line 12: @@
 #define lcdAddr 0x20 // set the address of the I2C device the LCD is connected to
 // create an lcd instance with correct constructor for how the lcd is wired to the I2C chip
 LiquidCrystal_I2C lcd(lcdAddr, 4, 5, 6, 0, 1, 2, 3, 7, NEGATIVE); // addr, EN, RW, RS, D4, D5, D6, D7, Backlight, POLARITY
@@ Line 18: / Line 17: @@
 void setup()
 {
-  lcd.begin(8,2);  // initialize the lcd as 20x4 (16,2 for 16x2)
+  lcd.begin(16,2);  // initialize the lcd as 20x4 (16,2 for 16x2)
+  lcd.clear();
+  //  lcd.home ();
+  //  lcd.print("123456789012345678");
+  //  lcd.setCursor (0,1);
+  //  lcd.print("ABCDEFGHIJKLMNOP");
+  lcd.setCursor (0,0);
+  lcd.print("Count:");
+  lcd.setBacklight(1);
 }
+int i=0;
 void loop()
 {
-  lcd.clear();
+  lcd.setCursor (7,0);
-  delay(200);
+  lcd.print(i++);
-  lcd.home ();
+  delay (100);
-  lcd.print("12345678");
-  lcd.setCursor (0,2);
-  lcd.print("ABCDEFGH");
-  delay (1800);
 }</code>
+Note: [[http://www.rpiblog.com/2012/07/interfacing-16x2-lcd-with-raspberry-pi.html|Code for Raspberry PI]]
+===== Special characters for the HD44780 =====
+^Hex^Character^
+|0xE4|micro|μ|
+|0xF4|Ohm|Ω|
+|0xDF|degree|º|