#//include<Wire.h>
#include<Adafruit_GFX.h>
#include<Adafruit_SSD1306.h>

//oled inisialisasi
const int lebar=128;
const int tinggi=64;
const int reset=4;
Adafruit_SSD1306 oled(lebar,tinggi,&Wire,reset);

//inisialisasi sensor
int sensorPin = 2;
volatile long pulse;
unsigned long lastTime;

float flowrate;

void setup() {
  //setup pin input sensor
  pinMode(sensorPin, INPUT);
  attachInterrupt(digitalPinToInterrupt(sensorPin), increase, RISING);

  //setup oled
  oled.begin(SSD1306_SWITCHCAPVCC,0x3C);
  
}

void loop() 
{
 flowrate = pulse / 6.6;
{
  if (millis() - lastTime > 1000) 
    pulse = 0;
    lastTime = millis();
}

  oled.clearDisplay();
  oled.setTextSize(1.5); //ukuran test nya
  oled.setTextColor(WHITE); //kecerahan nya
  oled.setCursor(2,15); //baris dan kolom mulainya ygdibawah (flowrate)
  oled.println("Q ="); 
  oled.setCursor(30,15); //baris dan kolom mulainya ygdibawah (Volume)
  oled.println(flowrate);
  oled.setCursor(65,15); //baris dan kolom mulainya ygdibawah (l/min)
  oled.println("l/Min");
  oled.display();
  
}

void increase() {
  pulse++;
}