How do I use Arduino I2C LCD?

How do I use Arduino I2C LCD?

On the I2C module, you will find a potentiometer that you can turn with a small screwdriver. Plug in the USB connector of the Arduino to power the LCD. You should see the backlight light up. Now rotate the potentiometer until one (16×2 LCD) or 2 rows (20×4 LCD) of rectangles appear.

How do I program my I2C LCD?

Adjusting The LCD Contrast On the I2C module, you will find a potentiometer that you can turn with a small screwdriver. Plug in the USB connector of the Arduino to power the LCD. You should see the backlight light up. Now rotate the potentiometer until the first line of the rectangle appears.

What is LCD with I2C?

I2C_LCD is an easy-to-use display module, It can make display easier. Using it can reduce the difficulty of make, so that makers can focus on the core of the work. We developed the Arduino library for I2C_LCD, user just need a few lines of the code can achieve complex graphics and text display features.

Is potentiometer necessary for LCD?

The LCD interfacing requires a potentiometer, which controls the backlight. But it’s hard for noobies to use a potentiometer, as they run into different problems. So, In this tutorial, we are going to interface LCD with Arduino and without potentiometer.

What is I2C 16×2 LCD?

This is a 16×2 LCD display screen with I2C interface. This I2C 16×2 Arduino LCD Screen is using an I2C communication interface. It means it only needs 4 pins for the LCD display: VCC, GND, SDA, SCL. It will save at least 4 digital/analog pins on Arduino. All connectors are standard XH2.

How do you connect an LCD to a breadboard?

The Setup

1. Insert your LCD screen into your breadboard vertically such that each pin has its own separate line on the board.
2. Insert your potentiometer in the same way.
3. Connect 5v and GND from Arduino to the + / – rails on your breadboard.
4. Connect Pins 1 and 16 from the LCD screen to the negative power rail.