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Interface 16×2 LCD Display With Raspberry Pi Pico Using Micropython

In this tutorial, we will learn how to connect and use a 16×2 LCD display with Raspberry Pi Pico to provide a user interface. The display is a very famous electronics component, There are many different types of displays in the market which have their own features Similarly 16×2 LCD has its own quality. We used it earlier with Arduino board but today we will use it with Raspberry Pi Pico board With Python Code. So let’s get started

Required Components

  1. Raspberry Pi Pico
  2. 16X2 LCD
  3. Jumper cable

What is a 16×2 Display?16x2 lcd display

LCD (Liquid Crystal Display) screens are one of the simplest and cheapest ways to provide applications for displaying various parameters and statuses of the system. The 16×1 display unit will have 16 characters and be in one line. The 16×2 LCD will have 32 characters in total 16in 1st line and another 16 in 2nd line

  • LCD 16×2 can be used in 4-bit mode or 8-bit mode.
  • LCD consists of 16 rows and 2 columns of 5×7 or 5×8 LCD dot matrices.

Circuit Diagram for 16×2 LCD display with raspberry pi pico

The circuit diagram between the Raspberry Pi Pico and I2C 16×2 LCD is very simple as shown below in the schematic.

16x2 LCD display with raspberry pi pico

  • Connect the LCD VCC & GND Pin to Raspberry Pi Pico 5V & GND
  • Connect the SDA & SCL pin of the LCD to Raspberry Pi Pico GP26 & G27 respectively.

Library & Source Code

I used the Thonny IDE that supports Micropython on the Raspberry Pi Pico. Firstly You need to Add libraries

  • The “i2c_lcd_lib.py” driver library
  • The “lcd_api.py” driver library

Copy all the below codes and then save all of the 3 codes in Raspberry Pi Pico Board.


Once, you run all these codes on the Raspberry Pi Pico board, the LCD will start displaying the ‘DiY Projects Lab‘ Message on Display.

Interface 16x2 LCD Display With Raspberry Pi Pico Micropython

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