Arduino Workshop - Parallel LCD Project 1: DFRobot Parallel LCD


Hardware Required:
  • Arduino Uno board
  • DFRobot 16x2 LCD Shield

Schematic:

No schematic necessary. All connections are made by installing the LCD Shield directly onto the Arduino's sockets.



Note: The boards tested use different signal and data pins than the default examples in the LCD Library. Our LCD Shield uses pin 8 for Register Select, Pin 9 for Enable, and pins 4, 5, 6, 7 for data - connecting to Arduino pins 12, 11, 5, 4 , 3 and 2, respectively. You cannot change these pin connections, but must make sure your Sketch code specifies the actual pins being used:
// the syntax to specify the connections used by the LCD Shield should read:
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);


Project Steps:
  1. Insert the LCD Shield module directly into the matching sockets on the Arduino.
  2. Open the appropriate Hello World sketch into the Arduino software and upload it to your module to test the LCD display.

Things to try: (Arduino Sketch examples)

  • HelloWorld - Basic communication test
  • AutoScroll - demonstrates display's automatic scrolling feature
  • Blink - Change block cursor style: blinking or non-blinking
  • Cursor - Hide or show the underline cursor
  • CustomCharacter - Demonstrates loading and displaying custom characters on a display
  • Display - demonstrates turning the display text on & off (hide, unhide)
  • RandomMessage - Randomly change a text message on the display
  • Scroll - shift the message display text left or right
  • SetCursor - Demonstrates direct positioning of the cursor before printing
  • TextDirection - Demonstrates right-to-left and left-to-right printing using the LCD library

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