Smart House Lights

Just Do Electronics October 06, 2019

Circuit Diagram :-

Code :-

 



//Prateek
//wwww.prateeks.in
//https://www.youtube.com/c/JustDoElectronics/videos

const int TRIG_PIN  = 11; 
const int ECHO_PIN  = 12; 
const int RELAY_PIN = 10; 
const int DISTANCE_THRESHOLD = 50; // centimeters

float duration_us, distance_cm;

void setup() {
  Serial.begin (9600);        
  pinMode(TRIG_PIN, OUTPUT);  // set arduino pin to output mode
  pinMode(ECHO_PIN, INPUT);   // set arduino pin to input mode
  pinMode(RELAY_PIN, OUTPUT); // set arduino pin to output mode
}

void loop() {
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  duration_us = pulseIn(ECHO_PIN, HIGH);
  distance_cm = 0.017 * duration_us;

  if(distance_cm < DISTANCE_THRESHOLD)
    digitalWrite(RELAY_PIN, HIGH); // turn on Relay
  else
    digitalWrite(RELAY_PIN, LOW);  // turn off Relay

  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");

  delay(500);
}

Video :-

2 Comments

sathish T20 February 2020 at 00:44
in your coding some error showing, kindly help us resolve the error
#include"NewPing.h"

^~~~~~~~~~~

compilation terminated.

exit status 1
NewPing.h: No such file or directory

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kuldeep4 September 2020 at 06:54
where is circuit diagram ?
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