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Placa ESP32-C3 USB-C com ecrâ oled 0,42 polegadas

Wifi Bluetooth

Programa arduino IDE para escrever texto no ecra Oled

No Arduino IDE deve-se escolher a placa ESP32C3 Dev Module

Necessário instalar a biblioteca U8g2lib

#include <U8g2lib.h>
#include <Wire.h>

// there is no 72x40 constructor in u8g2 hence the 72x40 screen is mapped in the middle of the 132x64 pixel buffer of the SSD1306 controller
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE, 6, 5);
int width = 72;
int height = 40;
int xOffset = 30; // = (132-w)/2
int yOffset = 12; // = (64-h)/2

void setup(void)
{
     delay(1000);
     u8g2.begin();
     u8g2.setContrast(255); // set contrast to maximum
     u8g2.setBusClock(400000); //400kHz I2C
     u8g2.setFont(u8g2_font_ncenB10_tr);
}

void loop(void)
{
    u8g2.clearBuffer(); // clear the internal memory
    u8g2.setCursor(xOffset+15, yOffset+25);
    u8g2.printf("   Ola");
    u8g2.setCursor(xOffset+0, yOffset+50);
    u8g2.printf("lojapm.pt");
    u8g2.sendBuffer(); // transfer internal memory to the display
}