Display ADC Value on I2C LCD using ESP8266 NodeMCU.

ESP8266-I2C-LCD-ADC.ino

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

#define analogPin A0 /* ESP8266 Analog Pin ADC0 = A0 */
int adcValue = 0;  /* Variable to store Output of ADC */

LiquidCrystal_I2C lcd(0x3F, 16, 2);

void setup()
{
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("ADC Value =      ");
    
}


void loop()
{
  adcValue = analogRead(analogPin); /* Read the Analog Input value */
  lcd.setCursor(0,0);
  lcd.print("ADC Value =      "); 
  lcd.setCursor(12, 0);
  lcd.print(adcValue);
  delay(1000);
}