arduino-nano5V-328P-i2c_lcd.ino

#include <Wire.h>
#include <I2C_LCD.h>

/*
 * ArduinoNano        I2C_LCD
 * GND          <->   GND
 * 5V           <->   5V
 * A4           <->   SDA
 * A5           <->   SCL
 * By virtue of this being an I2C display, only two pins (aside from power) are needed
 */

I2C_LCD lcd;
//Default i2c address for the Seeed I2C LCD 128x64 display
uint8_t I2C_LCD_ADDRESS = 0x51;

void setup() {
  //Start i2c connection
  Wire.begin();
  //Blank screen
  lcd.CleanAll(WHITE);
  //Set font to 6x8 black-on-white with auto-newline enabled
  lcd.FontModeConf(Font_6x8, FM_ANL_AAA, BLACK_BAC);
  //Set cursor to top-left of screen
  lcd.CharGotoXY(0,0);
  lcd.print("henlo user");
  //Go down a line
  lcd.CharGotoXY(0,10);
  delay(1500);
  lcd.print("helllo you STINKY    USER");
  //The above line took up two lines, so go down two
  lcd.CharGotoXY(0,30);
  delay(2000);
  lcd.print("go eat a power button ugly");
  delay(5000);
  //Clean up display for loop
  lcd.CleanAll(WHITE);
  lcd.CharGotoXY(0,0);
}

void loop() {
  //Will print ad-finitum. Because of how the Seeed I2C LCD works, after this reaches the bottom of the screen
  //if it keeps going then it will slowly corrupt the display state. Quite amusing to watch.
  lcd.print("henlo ");
  delay(1000);
}

nodemcu-esp12e-1mb-Nokia5110.ino

#include "Nokia_5110.h"

/*
 * NodeMCU 1.0          PCD8544
 * GND            <->   GND
 * 3v3            <->   VCC
 * D4             <->   RST
 * D6             <->   SCE
 * D5             <->   D/C
 * D3             <->   DN (MOSI)
 * D8             <->   SCLK
 * 3v3+330ohmResi <->   LED
 */

// RST = Reset
#define RST D4
// CE (sometimes labelled SCE) = Chip select
#define CE D6
// DC (sometimes labelled D/C) = Display/Control toggle
#define DC D5
// DIN (sometimes labelled DN(MOSI)) = Data Input
#define DIN D3
//CLK (sometimes labelled SCLK) = Clock (MUST be wired to a PWM-capable pin)
#define CLK D8

Nokia_5110 lcd = Nokia_5110(RST, CE, DC, DIN, CLK);

void setup() {
  //Because almost all PCD8544 (aka Nokia 5110/Nokia 3310) LCDs are recycled from old phones
  //Your minimum usable contrast may differ. 60 is the default, but you may wish to lower or raise it.
  lcd.setContrast(55);
  lcd.println("henlo user");
  delay(1500);
  lcd.println("helllo you         STINKY USER");
  delay(2000);
  lcd.println("go eat a power  button ugly");
  delay(5000);
  //Clear screen
  lcd.clear();
}

void loop() {
  //Will print ad-finitum. Once it reaches the bottom of the screen it will loop back round to the top.
  lcd.print("henlo ");
  delay(1000);
}