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Arduino Library for displaying double height characters on an LCD display. This library is compatible with the standard LiquidCrystal library dictributed with the Arduino IDE and also with the New LiquidCrystal which is a drop in replacement for the standard library.

The New LiquidCrystal library supports connections to LCDs using

  • 4 bit parallel interface
  • 8 bit parallel interface
  • I2C expansion boards
  • Shift registers

Note that this version of the library is incompatible with version 1 to implement compatibility with the New LiquidCrystal library.


Thanks to Bill Perry who reviewed the original code and suggested I base this library on the New LiquidCrystal library by F. Malpartida. Thak you also to Tim Eckel who wrote the LCDBitmap library whose code gave me insight on how to make this library compatible with both the standard LiquidCrystal and New LiquidCrystal libraries.


You must install the BigCrystal library into your Arduino library directory. Optionally, you can remove the standard LiquidCrystal library and replace it with the New LiquidCrystal library.

BigCrystal is implemented as a wrapper around an LCD object, created using either the standard or new LiquidCrystal libraries. The lcd object is passed through to the BigCrystal constructor.

BigCrystal exposes all LiquidCrystal public methods and delegates to the underlying object. This means that once the BigCrytal object is created, you just need to reference that instance instead of using both the BigCrystal instance and the underling LiquidCrystal instance.

The following methods are available to display double height characters:

  • writeBig(char c, uint8_t row, uint8_t col) - writes a single large character to the specified coordinates.
  • printBig(char* str, uint8_t row, uint8_t col) - writes a String to the specified coordinates.
  • widthBig(char c) - returns the width in characters of the specified large character. Includes the one column space following the character.


Arduino Library for displaying double height characters on an LCD display.




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