1. Install Library Arduino core for ESP8266
   - https://github.com/esp8266/Arduino
2. Install Library Arduino core for the ESP32
   - https://github.com/espressif/arduino-esp32
3. Install Library :
   - https://github.com/adafruit/Adafruit_BusIO
- https://github.com/adafruit/Adafruit_SSD1306
- https://github.com/adafruit/Adafruit-GFX-Library
- https://github.com/bblanchon/ArduinoJson (use V6)
   

1. OLED Display Screen Resolution, Change to your OLED display width and height.

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 32 // OLED display height, in pixels

2. OLED I2C ADDRESS

#define SCREEN_ADDRESS 0x3C

- use 0x3D if screen resolution 128x64 pixel
- use 0x3C if screen resolution 128x32 pixel

3. WiFi and Duino User

const char *ssid = "YOUR_SSID"; // Change this to your WiFi SSID
const char *password = "YOUR_SSID_PASSWORD"; // Change this to your WiFi password
const String ducoUser = "YOUR_DUINO_USERNAME"; // Change this to your Duino-Coin username

Change SDA and SCL accordingly with your board, this example with Wemos D1 Mini and DevKit V1

Feel free to modify, optimize and/or add yours.

Dont be confuse with OLED screen size, there are two common size :

• OLED 1.3" Display (128x64)
• OLED 0.96" Display (128x32)

**if you having difficulty on ESP8266 pin reset D4, replace it with -1