These Two I2C Components

  1. ESP32
/*
Rui Santos
Complete project details at https://RandomNerdTutorials.com/esp32-i2c-communication-arduino-ide/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files.

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
*/
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
Adafruit_BMP280 bmp;
void setup() {
Serial.begin(115200);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}

bool status = bmp.begin(0x76);
if (!status) {
Serial.println("Could not find a valid BMP280 sensor, check wiring!");
while (1);
}

delay(2000);
display.clearDisplay();
display.setTextColor(WHITE);
}
void loop() {
delay(5000);
//read temperature and humidity
float t = bmp.readTemperature();
float h = bmp.readPressure();
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from bmp sensor!");
}
// clear display
display.clearDisplay();

// display temperature
display.setTextSize(1);
display.setCursor(0,0);
display.print("Temperature: ");
display.setTextSize(2);
display.setCursor(30,10);
display.print(t);
display.print(" ");
display.setTextSize(1);
display.cp437(true);
display.write(167);
display.setTextSize(2);
display.print("C");

// display pressure
display.setTextSize(1);
display.setCursor(0, 35);
display.print("Pressure: ");
display.setTextSize(2);
display.setCursor(30, 45);
display.print(h/1000);
display.print("kPa");

display.display();
}
display.setTextColor(WHITE); (change text color)
display.setTextSize(1); (change text size)
display.setCursor(0,8); (changes the position of the text on the OLED)

Thanks for following this tutorial! Hope you enjoy it, also don’t be shy to tell me if something’s wrong because I appreciate any feedback.

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Andreana Hartadi Suliman

Andreana Hartadi Suliman

If we are afraid of failure, it means we have limited our ability. — Hi, nice to see you here. Have a good day!