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// C++ code
//	THE BELOW CODE MAY SEEM LIKE NOT WORKING, BUT ACUALLY WORKS!

#include 
#include 
#include 
// #include 

const byte I2C_ADDR    =   0x27;
const byte LCD_COLUMNS = 16;
const byte LCD_LINES   = 2;

LiquidCrystal_I2C lcd_1(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int trigger = 7;

int echo = 6;
// Adafruit_LiquidCrystal lcd_1(0x27);


void setup()
{
  Serial.begin(9600);
  pinMode(7, OUTPUT);
  digitalWrite(7, LOW);
  pinMode(echo, INPUT);
  lcd_1.begin(16, 2);
  pinMode(13, OUTPUT);
  digitalWrite(13, HIGH);
  pinMode(2, INPUT);
  pinMode(8,INPUT)
  
}

void loop()
{
  float cm = 0;
  double time = 0;


  digitalWrite(7, HIGH);
  delayMicroseconds(2);
  digitalWrite(7,LOW);
  time = pulseIn(echo, HIGH);
  cm = time*29/2*0.0473/100*2.511111;
  Serial.println(cm);
  
  lcd_1.setCursor(0, 0);
  lcd_1.setBacklight(1);
  lcd_1.print("cm: ");
  lcd_1.setCursor(0, 1);
  lcd_1.print(cm);
  lcd_1.print("cm +-0.1cm");
  delayMicroseconds(1000);
}