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README.md

BigCrystalTWI

Arduino Library for displaying double height characters on an LCD display over I2C (Two Wire Interface) using the MCP2008 chipset, such as the Adafruit backpack. This library will not work for other I2C chipsets.

A corresponding library, BigCrystal supports other connection methods, such as 4 and 8 bit parallel, I2C using the PFC8574 expander and shift registers.

Usage

To use BigCrystalTWI, the sketch will need the following includes:

#include <Wire.h>
#include <LiquidTWI.h>
#include <BigCrystalTWI.h>

Creating the LCD object is similar to the LiquidTWI library; the I2C address needs to be specified. For example:

BigCrystalTWI lcd(0);

The following methods, in addition to those in LiquidTWI are available:

  • 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.

About

Arduino Library for displaying double height characters on an LCD display over I2c (Two Wire Interface).

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