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ESP8266 NodeMCU Interface – LCD

LCD 16×2 HD44780 Display Interface

  • We can easily add a 2×16 LCD to ESP8266.
  • But ESP8266 has less GPIO pins.
  • Two methods.
    • Using i2c driver
    • Using GPIO pins.

Code

  • https://forums.adafruit.com/viewtopic.php?f=19&t=21586&p=113177

Nokia-5110 PCD8544 Display interface

  • Required NodeMCU Modules (Firmware) : GPIO Module
  • Required hardware : ESP8266 with Programmer (or)  NodeMCU Dev Kit, Nokia 5110 PCD8544 LCD Display,
  • Required software tools : ESPlorer IDE Tool

Code

 


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Embedded Interface – LCD

Examples

  • Display Character
  • Display String
  • Display Decimal
    • Display one Digit Decimal
    • Display Two Digit Decimal
    • Display Three Digit Decimal
  • Auto scroll Display
  • Blink
  • Cursor On/Off
  • Custom Character
  • Display
  • Hello world
  • Scroll
  • Serial Display
  • Set Cursor
  • Text Direction

LCD Interface with Micro-controllers

Different LCD Displays

  • Nokia 5110 LCD Module with PCD8544 
  • Nokia 6610 
  • OLEDs 
  • 2×16 LCD- hd44780 
  • Nextion Display 

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Embedded Interface – LCD HD44780

  • HD44780 compliant controllers 16×2 Character LCD is a very basic and low cost LCD module which is commonly used in electronic products and projects.
  • 16×2 means it contains 2 rows that can display 16 characters.
  • Its other variants such as 16×1 and 16×4 are also available in the market.
  • In these displays, each character is displayed using 5×8 or 5×10 dot matrix.

Experiments

  • Change Cursor Location Based on Key Input

LCD4 Bit Mode Functions

 

 

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