A simple Arduino script to display the Sparkfun logo and SparkFun!! on a HD44780 LCD screen. See https://lh6.googleusercontent.com/_L0Eke9UQNQJukJq1SFx7ZevKHVCGhQ6FiI92qOs1yMNd-CIVs9OLxAx1cneC-sp1g=s400 for a picture

SparkfunChar.ino

/*
 The Sparkfun logo is intellectual property of Sparkfun Inc.

  The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * LCD R/W pin to ground
 * 10K potentiometer:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)
 * 10K poterntiometer on pin A0
  
 */

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// make some custom characters:
byte sfe1[] = {0x01,0x03,0x03,0x01,0x04,0x08,0x1D,0x1F};
byte sfe2[] = {0x18,0x14,0x10,0x1A,0x1E,0x1F,0x1F,0x1F};
byte sfe3[] = {0x1F,0x1F,0x1F,0x1F,0x1F,0x1C,0x18,0x10};
byte sfe4[] = {0x1F,0x1E,0x1E,0x1C,0x10,0x00,0x00,0x00};


void setup() {
  // create a new character
  lcd.createChar(0, sfe1);
  // create a new character
  lcd.createChar(1, sfe2);
  // create a new character
  lcd.createChar(2, sfe3);
  // create a new character
  lcd.createChar(3, sfe4);    

  // set up the lcd's number of columns and rows: 
  lcd.begin(8, 2);
   
  lcd.write(byte(0));
  lcd.write(byte(1));
  lcd.print(" Spark");
  lcd.setCursor(0,1);
  lcd.write(byte(2));
  lcd.write(byte(3));
  lcd.print(" Fun!!");
}

void loop() {
  
}