Hello, I would like to know, a general guide on how to use an I2C LCD with an Arduino UNO, and how to wire up an I2C LCD and the base programming where I can print what I want. If someone could help, that would be great! Also what I2C means would be great. Thanks
"Inter-Integrated Circuit'
Pls google "lcd arduino i2c" you will find many examples.
I2C is really I I C = Inter-IC bus
It is a data bus designed to go from one IC to another IC on the same board or very close by.
It has been known to go longer distances but that is beyond the original intention.
Are you talking about a character LCD like the 1602 or 2004 with I2C backpack? A great library for using those is the hd44780 library available through the IDE library manager.
Hi, you can use a ready-built library for that. You will actually need two libraries (one for the LCD and another for the I2C interface):
<Wire.h> //for the I2C
<LiquidCrystal_I2C.h> //for the LCD display
The I2C LCD interface only needs 4 wires. SDA and SCL and 5V and GND. In fact, using I2C to run these displays is an easy and good way to do this, as it only needs those few connections.
If you need a bezel for your LCD project, we happen to make one for the 1602 and 2004 (see www.bezelsanddisplays.co.uk).
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