rfn

/*
transmitter
Copyright (C) 2008 Mike McCauley
modified 30 Dec 2017
By Muhammad Hasan
*/
#include <VirtualWire.h>
const int trig = 6;
const int echo = 5;
const int led_pin = 13;
const int transmit_pin = 12;
void setup()
{ Serial.begin(9600);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
// Initialise the IO and ISR
vw_set_tx_pin(transmit_pin);
vw_set_ptt_inverted(true); // Required for DR3100
vw_setup(2000); // Bits per sec
pinMode(led_pin, OUTPUT);
}
void loop()
{
digitalWrite(trig, HIGH);
delayMicroseconds(10);
digitalWrite(trig, LOW);
int durasi = pulseIn(echo, HIGH);
int jarak = (durasi*0.034)/2;
int msg[]={ jarak };
digitalWrite(led_pin, HIGH);
vw_send((uint8_t *)msg,1);
vw_wait_tx(); // Wait until the whole message is gone
digitalWrite(led_pin, LOW);
Serial.println(jarak);
delay(1000);
}