How To Use Grove-LCD RGB Backlight with NodeMCU

Play With NodeMCU Using Arduino IDE

If You Don’t know How To Use ESP8266 with Arduino Please visit this post given below.

Arduino Support for ESP8266 with simple test code

• Open Arduino IDE.
•  Download the Grove-LCD RGB Backlight Library from Github.
•  Since you have downloaded the zip Library, open your Arduino IDE, click on Sketch > Include Library > Add .ZIP Library
• Here are 12 examples in the library as below.
  • Autoscroll
  • Blink
  • Cursor
  • CustomCharacter
  • Display
  • fade
  • HelloWorld
  • Scroll
  • SerialDisplay
  • setColor
  • setCursor
  • TextDirection
• Please follow below picture to select example HelloWorld and upload the arduino.

Here is the code of HelloWorld.ino.

#include <Wire.h>
#include "rgb_lcd.h"

rgb_lcd lcd;

const int colorR = 255;
const int colorG = 0;
const int colorB = 0;

void setup() 
{
    // set up the LCD's number of columns and rows:
    lcd.begin(16, 2);

    lcd.setRGB(colorR, colorG, colorB);

    // Print a message to the LCD.
    lcd.print("hello, world!");

    delay(1000);
}

void loop() 
{
    // set the cursor to column 0, line 1
    // (note: line 1 is the second row, since counting begins with 0):
    lcd.setCursor(0, 1);
    // print the number of seconds since reset:
    lcd.print(millis()/1000);

    delay(100);
}

• We will see the hello world on LCD.

Pin Connection

Use Vin Pin for Power supply to Grove LCD RGB Backlight. Because Grove LCD RGB Backlight needs 5V power supply.