โมดูล TTGO ESP8266 OLED NodeMCU พร้อมจอ OLED ขนาด 0.91 นิ้ว

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

//SDA -- D4
//SCL -- D5
//RST -- D2

OLED display(SDA, SCL);

void setup() {
pinMode(D2, OUTPUT);
digitalWrite(D2, LOW); // put D2 LOW to reset OLED
delay(50);
digitalWrite(D2, HIGH); // while OLED is running, D2 must be set to HIGH

Serial.begin(9600);
Serial.println("OLED Checking");

// Initialize display
display.begin();

// Test message
display.print("Halo World");
delay(3000);

// Test long message
display.print("This is just a test message");
delay(3000);

// Test display clear
display.clear();
delay(3000);

// Test message postioning
display.print("Top-Left");
display.print("4th row", 4);
display.print("Right-Bottom", 7, 4);
delay(3000);

// Test display OFF
display.off();
display.print("3rd row", 3, 8);
delay(3000);

// Test display ON
display.on();
delay(3000);
}

int m = 0;
int n = 0;

void loop() {

m = m % 4;
c = micros() % 6;
if (m == 0) display.clear();
display.print("Halo World", m++, n++);
delay(400);
}