Touch Less Door bell

We all know that time is very hard due to covid-19.In this project Door bell will generate the sound after sensor data

Jul 23, 2020

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touch less door bell

coivd-19 project

aduino

Components and supplies

Arduino Nano R3

Buzzer

Female/Female Jumper Wires

Ultrasonic Sensor - HC-SR04 (Generic)

Male/Male Jumper Wires

Apps and platforms

Arduino IDE

Project description

Code

arduino

Code for this project

1int trigPin = 9;
2int echoPin = 8;
3int Buzzer = 11;
4void setup()   {
5Serial.begin(9600); 
6pinMode(Buzzer, OUTPUT);
7pinMode(trigPin, OUTPUT);
8pinMode(echoPin,   INPUT);
9}
10void loop() {
11long duration, distance;
12digitalWrite(trigPin,HIGH);
13delayMicroseconds(1000);
14digitalWrite(trigPin,   LOW);
15duration=pulseIn(echoPin, HIGH);
16distance =(duration/2)/29.1;
17Serial.print(distance);
18Serial.println("CM");
19delay(10);
20if((distance<=10))   
21{
22digitalWrite(Buzzer, HIGH);
23}
24else if(distance>10)
25{
26digitalWrite(Buzzer,   LOW);
27}
28}
29

int trigPin = 9;
int echoPin = 8;
int Buzzer = 11;
void setup()   {
Serial.begin(9600); 
pinMode(Buzzer, OUTPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin,   INPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin,HIGH);
delayMicroseconds(1000);
digitalWrite(trigPin,   LOW);
duration=pulseIn(echoPin, HIGH);
distance =(duration/2)/29.1;
Serial.print(distance);
Serial.println("CM");
delay(10);
if((distance<=10))   
{
digitalWrite(Buzzer, HIGH);
}
else if(distance>10)
{
digitalWrite(Buzzer,   LOW);
}
}

Code

arduino

Code for this project

1int trigPin = 9;
2int echoPin = 8;
3int Buzzer = 11;
4void setup()  {
5Serial.begin(9600); 
6pinMode(Buzzer, OUTPUT);
7pinMode(trigPin, OUTPUT);
8pinMode(echoPin,  INPUT);
9}
10void loop() {
11long duration, distance;
12digitalWrite(trigPin,HIGH);
13delayMicroseconds(1000);
14digitalWrite(trigPin,  LOW);
15duration=pulseIn(echoPin, HIGH);
16distance =(duration/2)/29.1;
17Serial.print(distance);
18Serial.println("CM");
19delay(10);
20if((distance<=10))  
21{
22digitalWrite(Buzzer, HIGH);
23}
24else if(distance>10)
25{
26digitalWrite(Buzzer,  LOW);
27}
28}
29

int trigPin = 9;
int echoPin = 8;
int Buzzer = 11;
void setup()  {
Serial.begin(9600); 
pinMode(Buzzer, OUTPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin,  INPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin,HIGH);
delayMicroseconds(1000);
digitalWrite(trigPin,  LOW);
duration=pulseIn(echoPin, HIGH);
distance =(duration/2)/29.1;
Serial.print(distance);
Serial.println("CM");
delay(10);
if((distance<=10))  
{
digitalWrite(Buzzer, HIGH);
}
else if(distance>10)
{
digitalWrite(Buzzer,  LOW);
}
}

Downloadable files

Circuit

Easy to make

Circuit

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