Click here to download the LiquidCrystal_I2C library.

Follow the next steps to install the library:

We’re using this library by Marco Schwartz. There are several libraries that work with the I2C LCD. To install the ESP8266 add-on in your Arduino IDE, read the following tutorial: How to Install the ESP8266 Board in Arduino IDE. Mac and Linux instructions – ESP32 Board in Arduino IDE.Windows instructions – ESP32 Board in Arduino IDE.Arduino IDE with ESP32įollow one of the next guides to prepare your Arduino IDE to work with the ESP32: You can also wire your LCD to the ESP8266 by following the next schematic diagram. We’re using the ESP8266 default I2C pins ( GPIO 4 and GPIO 5).īefore proceeding with the project, you need to install the ESP32 or ESP8266 add-on in the Arduino IDE. You can also use the following table as a reference. Wire your LCD to the ESP32 by following the next schematic diagram. We’re using the ESP32 default I2C pins ( GPIO 21 and GPIO 22). This display uses I2C communication, which makes wiring really simple. You can use the preceding links or go directly to /tools to find all the parts for your projects at the best price! Optional – ESP8266 12-E – read Best ESP8266 Wi-Fi Development Boards.ESP32 DOIT DEVKIT V1 Board – read ESP32 Development Boards Review and Comparison.To follow this tutorial you need these parts: On a “regular” LCD you need to add a potentiometer to the circuit to adjust the contrast. You just need to wire the SDA and SCL pins.Īdditionally, it comes with a built-in potentiometer you can use to adjust the contrast between the background and the characters on the LCD. The advantage of using an I2C LCD is that the wiring is really simple.

You can also use this guide with the ESP8266.įor this tutorial we’ll be using a 16×2 I2C LCD display, but LCDs with other sizes should also work. We’ll show you how to wire the display, install the library and try sample code to write text on the LCD: static text, and scroll long messages. This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using Arduino IDE.

Arduino wire library download