NodeMCU + JSN-SR04T + OLED

Vše na 3.3V

displej SCL = D1 a SDA = D2

#include <HCSR04.h>
#include <Wire.h>
#include <ACROBOTIC_SSD1306.h>





HCSR04 hc(D6, D5); // Initialize Pin D6, D5



int distance;

void setup()
{
  Serial.begin(115200);
  Serial.print("Meric-vzdalenosti");
  Wire.begin(); 
  oled.init();                      // Initialze SSD1306 OLED display
  oled.clearDisplay();              // Clear screen
  oled.putString("INIT");
  delay(200);                // wait 1000 ms
}


void loop()
{
  distance = hc.dist();      /*je to int takže bez desetin*/

  if (distance>0) {   
      Serial.println(distance); // Print in centimeters the value from the sensor
      oled.clearDisplay(); 
      oled.setTextXY(0,0);              // Set cursor position, start of line 0
      oled.putString(String(distance));
      delay(1000);
  }
  delay(100);
}