ESP32 ESP32 OELD DISPLAY - Tuoxin Electronics

Hardware Connection Diagram

ESP32 Pin	OLED Module
3.3V	VCC
GND	GND
GPIO21	SDA (with 4.7KΩ pull-up)
GPIO22	SCL (with 4.7KΩ pull-up)

Arduino IDE Code

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  Serial.begin(115200);
  
  // Initialize OLED display
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("OLED initialization failed!");
    while(1); // Halt if initialization fails
  }
  
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(10, 20);
  display.println("Hello World");
  display.display();
}

void loop() {
  // No continuous operations needed for static display
}