Proximity Detector Alarm

Hear a "beep" if someone gets too close!

Jun 9, 2016

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proximity

proximity detector alarm

motion sensor

alarm

Components and supplies

Breadboard (generic)

HC-SR04 Ultrasonic Sensor

Arduino UNO

Jumper wires (generic)

Speaker 0.5 w

LED (generic)

Apps and platforms

Arduino IDE

Project description

Code

proximitydetectoralarm

arduino

1#define trigPin 13
2#define echoPin 12
3#define speaker 11
4#define   led2 10
5
6void setup() {
7  Serial.begin (9600);
8  pinMode(trigPin, OUTPUT);
9   pinMode(echoPin, INPUT);
10  pinMode(speaker, OUTPUT);
11  pinMode(led2, OUTPUT);
12}
13
14void   loop() {
15  long duration, distance;
16  digitalWrite(trigPin, LOW);  
17  delayMicroseconds(2);   
18  digitalWrite(trigPin, HIGH);
19  delayMicroseconds(10); 
20  digitalWrite(trigPin,   LOW);
21  duration = pulseIn(echoPin, HIGH);
22  distance = (duration/2) / 29.1;
23   if (distance < 192) {  // set your distance
24  tone(speaker,7); 
25  digitalWrite(led2,HIGH);
26}
27   
28  delay(50); //change the rate at which the speaker pings
29}
30

#define trigPin 13
#define echoPin 12
#define speaker 11
#define   led2 10

void setup() {
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
   pinMode(echoPin, INPUT);
  pinMode(speaker, OUTPUT);
  pinMode(led2, OUTPUT);
}

void   loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW);  
  delayMicroseconds(2);   
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10); 
  digitalWrite(trigPin,   LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
   if (distance < 192) {  // set your distance
  tone(speaker,7); 
  digitalWrite(led2,HIGH);
}
   
  delay(50); //change the rate at which the speaker pings
}

proximitydetectoralarm

arduino

1#define trigPin 13
2#define echoPin 12
3#define speaker 11
4#define  led2 10
5
6void setup() {
7  Serial.begin (9600);
8  pinMode(trigPin, OUTPUT);
9  pinMode(echoPin, INPUT);
10  pinMode(speaker, OUTPUT);
11  pinMode(led2, OUTPUT);
12}
13
14void  loop() {
15  long duration, distance;
16  digitalWrite(trigPin, LOW);  
17  delayMicroseconds(2);  
18  digitalWrite(trigPin, HIGH);
19  delayMicroseconds(10); 
20  digitalWrite(trigPin,  LOW);
21  duration = pulseIn(echoPin, HIGH);
22  distance = (duration/2) / 29.1;
23  if (distance < 192) {  // set your distance
24  tone(speaker,7); 
25  digitalWrite(led2,HIGH);
26}
27  
28  delay(50); //change the rate at which the speaker pings
29}
30

#define trigPin 13
#define echoPin 12
#define speaker 11
#define  led2 10

void setup() {
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(speaker, OUTPUT);
  pinMode(led2, OUTPUT);
}

void  loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW);  
  delayMicroseconds(2);  
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10); 
  digitalWrite(trigPin,  LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
  if (distance < 192) {  // set your distance
  tone(speaker,7); 
  digitalWrite(led2,HIGH);
}
  
  delay(50); //change the rate at which the speaker pings
}

Downloadable files

untitled

https://github.com/saaketporay/Proximity-Detector-Alarm

Diagram

untitled

https://github.com/saaketporay/Proximity-Detector-Alarm

Diagram

Schematic

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