Gadget Download

#define trigPin 12
#define echoPin 2
#include <LiquidCrystal.h>
#define D4 6
#define D5 7
#define D6 8
#define D7 9
#define RS 11
#define EN 12
float tempreture;
LiquidCrystal lcd(12, 11, 6, 7, 8, 9);
void setup()
{
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  float duration, distance;
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(1000);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Distance; ");
  lcd.setCursor(10,0);
  lcd.print(distance);
  delay(100);
}