超聲波+LCD液晶顯示距離=arduino

ID:110514 · 發(fā)表于 2016-3-24 11:50

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#include "SR04.h"
#define TRIG_PIN 2
#define ECHO_PIN 3
SR04 sr04 = SR04(ECHO_PIN,TRIG_PIN);
long a;
LiquidCrystal_I2C lcd(0x27,20,4);
void setup() {
Serial.begin(9600);
Serial.println("Example written by Coloz From Arduin.CN");
delay(100);

lcd.init(); // initialize the lcd
lcd.backlight();
}

void loop() {
a=sr04.Distance();
Serial.print(a);
Serial.println("cm");
delay(100);
lcd.setCursor(9, 1);
lcd.print(a);
lcd.print("cm");

}