Bluetooth Obstruction Sensor with Android app

This project is used to provide the distance of your intruder on your phone app via Bluetooth. Using MIT app inventor for the app making.

Aug 20, 2021

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1 respects

bluetooth

tracking

app

Components and supplies

Breadboard (generic)

HC-05 Bluetooth Module

Arduino UNO

Ultrasonic Sensor - HC-SR04 (Generic)

Female/Female Jumper Wires

Apps and platforms

Arduino Web Editor

Arduino IDE

MIT App Inventor 2

Project description

Code

bluetooth_Ultrasonic_Sensor

c_cpp

1//by Druhi Chakraborty
2#include <HCSR04.h>
3#include <SoftwareSerial.h>
4
5HCSR04  DS(9, 8);//initalizing trigPin and echoPin
6
7SoftwareSerial BT(1,0);//initialing  RX and TX Pins
8
9void setup(){
10  Serial.begin(9600);
11  BT.begin(9600);
12}
13
14void  loop(){
15  int s=DS.dist();
16  if (s>0){
17    s=0;//sensor gives -ve if the  object is out of range
18  }
19  Serial.println(s);//prints the distance on seril  monitor
20  BT.println(s);//sends to the transmitter
21  delay(500);
22  //an  interval of 500ms in order to prevent trigger signal to the echo signal
23}

//by Druhi Chakraborty
#include <HCSR04.h>
#include <SoftwareSerial.h>

HCSR04  DS(9, 8);//initalizing trigPin and echoPin

SoftwareSerial BT(1,0);//initialing  RX and TX Pins

void setup(){
  Serial.begin(9600);
  BT.begin(9600);
}

void  loop(){
  int s=DS.dist();
  if (s>0){
    s=0;//sensor gives -ve if the  object is out of range
  }
  Serial.println(s);//prints the distance on seril  monitor
  BT.println(s);//sends to the transmitter
  delay(500);
  //an  interval of 500ms in order to prevent trigger signal to the echo signal
}

Downloadable files

Circuit Diagram

untitled

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