#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH,  SCREEN_HEIGHT,  &Wire, -1);
const int trigPin = 9;
const int echoPin = 10;
int duration, distance;

void setup() {
pinMode (trigPin, OUTPUT);
pinMode (trigPin, INPUT);
Serial.begin(9600);
if(!display.begin (SSD1306_SWITCHCAPVCC,  0x3c))  {
  Serial.println(F("SSD1306 allocation failed"));
  for(;;);
 }
}

void loop() {

digitalWrite(trigPin,LOW);
delayMicroseconds(2);

digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration*.034)/2;
Serial.print("Jarak: ");
Serial.println(distance);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 28);
display.print("Jarak: ");
display.println(distance);
display.display();
delay(200);
}