Interfacing of Multiple Ultrasonic Sensors (3 HC-SR04 ) With Arduino

Interfacing of Multiple Ultrasonic Sensors (3 HC-SR04 ) With Arduino

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Block diagram:

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HC-SR04 ULTRASONIC SENSOR:

SCHEMATIC DIAGRAM:

FINAL SOFTWARE CODE:

----------------------------------------

#include <LiquidCrystal.h>

LiquidCrystal lcd(8,9,10,11,12,13);

#define trigPin1 A0

#define echoPin1 A1

#define trigPin2 A2

#define echoPin2 A3

#define trigPin3 A4

#define echoPin3 A5

int ALARM = 7;

long duration, distance, FIRSTSensor,SECONDSensor,THIRDSensor;

void setup()

{

lcd.begin(16,2);

Serial.begin (9600);

lcd.clear(); 

pinMode(trigPin1, OUTPUT);

pinMode(echoPin1, INPUT);

pinMode(trigPin2, OUTPUT);

pinMode(echoPin2, INPUT);

pinMode(trigPin3, OUTPUT);

pinMode(echoPin3, INPUT);

pinMode(ALARM, OUTPUT);

digitalWrite(ALARM, LOW);

 lcd.setCursor(0,0);lcd.print("Interfacing ");

lcd.setCursor(0,1);lcd.print("of Multiple ");

delay(3000);lcd.clear();  

lcd.setCursor(0,0);lcd.print("3 HC - SR04 ");

lcd.setCursor(0,1);lcd.print("Ultrasonic  ");

delay(3000);lcd.clear();

lcd.setCursor(0,0);lcd.print("SensorS With ");

lcd.setCursor(0,1);lcd.print("Arduino ");

delay(3000);lcd.clear();

}

void loop() 

{

/////////////////////////////////////////////////////// 

SonarSensor(trigPin1, echoPin1);

FIRSTSensor = distance;

SonarSensor(trigPin2, echoPin2);

SECONDSensor = distance;

SonarSensor(trigPin3, echoPin3);

THIRDSensor = distance;

/////////////////////////////////////////////////////////////

digitalWrite(ALARM, LOW);

//////////////////////////////////////////////////////////////////////////////////////

Serial.print("S1:");Serial.println(FIRSTSensor); delayMicroseconds(10);

Serial.print("S2:");Serial.println(SECONDSensor);delayMicroseconds(10);

Serial.print("S3:");Serial.println(THIRDSensor); delayMicroseconds(10);

///////////////////////////////////////////////////////////////////////////////////////

lcd.setCursor(0,0);lcd.print("S1:");lcd.setCursor(4,0);lcd.print(FIRSTSensor);

lcd.setCursor(9,0);lcd.print("S2:");lcd.setCursor(12,0);lcd.print(SECONDSensor);

lcd.setCursor(0,1);lcd.print("S3:");lcd.setCursor(4,1);lcd.print(THIRDSensor);

delay(1000);lcd.clear();

///////////////////////////////////////////////////////

if((FIRSTSensor >= 10) & (FIRSTSensor <= 50)) 

{digitalWrite(ALARM, HIGH);delay(500);}

///////////////////////////////////////////////////////

if((SECONDSensor >= 10) & (SECONDSensor <= 50)) 

{digitalWrite(ALARM, HIGH);delay(500);}

///////////////////////////////////////////////////////

if((THIRDSensor >= 10) & (THIRDSensor <= 50)) 

{digitalWrite(ALARM, HIGH);delay(500);}

///////////////////////////////////////////////////////

}

/////////////////////////////////////////////////////////////////////////////////

void SonarSensor(int trigPin,int echoPin)

{

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

}

------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////////////////////////////////////

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IoT Applications on Secure Smart Shopping System using ESP32 | RFID

Wireless DC Motor Speed and Direction Control using Arduino with IR Remote

Wireless DC Motor Speed and Direction Control using Arduino with IR Remote

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PROJECT VIDEO LINK:

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Block diagram:

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SAMPLE SOFTWARE CODE:
----------------------------------------

#include <IRremote.h>

const int RECV_PIN=11;

IRrecv irrecv(RECV_PIN);

decode_results results;

///////////////////////////////////////////////////////////

int P1=A0;

int P2=A1;

int P3=A2;

int P4=A3;

int P5=A4;

///////////////////////////////////////////////////////////

int aa=0;int bb=0;

int PWM1Pin = 9;

int PWM2Pin = 10;  

int motor1Speed = 0;

int motor2Speed = 0;

int fr=0;

int br=0;

///////////////////////////////////////////////////////////

void setup()

{

pinMode(P1, OUTPUT);

pinMode(P2, OUTPUT);

pinMode(P3, OUTPUT);

pinMode(P4, OUTPUT);

pinMode(P5, OUTPUT);

irrecv.enableIRIn();

irrecv.blink13(true);

analogWrite(PWM1Pin, motor1Speed);analogWrite(PWM2Pin, motor2Speed);

digitalWrite(P1,LOW);digitalWrite(P2,LOW);digitalWrite(P3,LOW);

digitalWrite(P4,LOW);digitalWrite(P5,LOW);

}

///////////////////////////////////////////////////////////

void loop() 

{

if (irrecv.decode(&results)) 

{

delay(100);

///////////////////////////////////////////////////////////////////////////

if(results.value==0x11111111)////forwad

{

fr=1;br=0;aa=bb;

}

///////////////////////////////////////////////////////////////////////////

if(results.value==0x22222222)////backward

{

br=1;fr=0;bb=aa;

}

///////////////////////////////////////////////////////////////////////////

if(fr==1)

{

if(results.value==0x33333333)

{

aa=aa+1;br=0;

}

///////////////////////////////////////////////////////////////////////////////////////////////

if(results.value==0x44444444)

{

aa=aa-1;br=0;

if(aa<0){motor1Speed=0;motor2Speed=0;

analogWrite(PWM1Pin, motor1Speed);

analogWrite(PWM2Pin, motor2Speed);

aa=0;digitalWrite(P1,LOW);

digitalWrite(P2,LOW);

digitalWrite(P3,LOW);

digitalWrite(P4,LOW);

digitalWrite(P5,LOW);}

}

}

///////////////////////////////////////////////////////////////////////////

if(br==1)

{

if(results.value==0x55555555)

{

bb=bb+1;fr=0;

}

///////////////////////////////////////////////////////////////////////////////////////////////

if(results.value==0x66666666)

{

bb=bb-1;fr=0;

if(bb<0){motor1Speed=0;motor2Speed=0; 

analogWrite(PWM1Pin, motor1Speed);

analogWrite(PWM2Pin, motor2Speed);

bb=0;digitalWrite(P1,LOW);

digitalWrite(P2,LOW);

digitalWrite(P3,LOW);

digitalWrite(P4,LOW);

digitalWrite(P5,LOW);}

}

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////

if(results.value==0x7777777)

{

motor1Speed=0;motor2Speed=0; analogWrite(PWM1Pin, motor1Speed);analogWrite(PWM2Pin, motor2Speed);aa=0;bb=0;br=0;fr=0;

digitalWrite(P1,LOW);digitalWrite(P2,LOW);digitalWrite(P3,LOW);digitalWrite(P4,LOW);digitalWrite(P5,LOW);

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

irrecv.resume(); // Receive the next value

delay(100);

}

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////

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Category

Science & Technology

IoT Project : Home Automation and Weather Monitor Using NodeMCU with Cayenne

IoT Project : Home Automation and Weather Monitor Using NodeMCU with Cayenne

PROJECT VIDEO LINK:

Pin diagram:

software app LINK:

https://developers.mydevices.com/cayenne/features/remote-monitoring/

SAMPLE SOFTWARE CODE:
----------------------

#include <Adafruit_Sensor.h>

#include <ESP8266WiFi.h>

#include <ESP8266WiFiAP.h>

#include <ESP8266WiFiGeneric.h>

#include <ESP8266WiFiMulti.h>

#include <ESP8266WiFiScan.h>

#include <ESP8266WiFiSTA.h>

#include <ESP8266WiFiType.h>

#include <WiFiClient.h>

#include <WiFiClientSecure.h>

#include <WiFiServer.h>

#include <WiFiUdp.h>

#define CAYENNE_PRINT Serial

#include <CayenneMQTTESP8266.h>

//////////////////////////////////////////////////////////////////////

char ssid[] = "svskits";

char wifiPassword[] = "123456";

//////////////////////////////////////////////////////////////////////

char username[] = "54fab1d0-749b-11ea-9915-d7baa233c";

char password[] = "1b47fcc0cacabd471e6c80d590eaa9322ce";

char clientID[] = "6736db70-749c-11ea-9179-a737487a4";

//////////////////////////////////////////////////////////////////////

unsigned long lastMillis = 0;

#include "DHT.h"

#define DHTPIN D4     

#define DHTTYPE DHT11  

DHT dht(DHTPIN, DHTTYPE);

float h,t,f,hic,hif;

////////////////////////////////////////////////////////////////////////

void setup()

{

dht.begin();

Serial.begin(9600);

Cayenne.begin(username, password, clientID, ssid, wifiPassword);

pinMode(D0,OUTPUT);

pinMode(D1,OUTPUT);

pinMode(D2,OUTPUT);

pinMode(D3,OUTPUT);

}

///////////////////////////////////////////////////////////////////////

void loop()

{

Cayenne.loop();

if (millis() - lastMillis > 10000)

{

lastMillis = millis();

Cayenne.virtualWrite(0, h);

Cayenne.virtualWrite(1, t);

Cayenne.virtualWrite(2, hic);

}

h = dht.readHumidity();

t = dht.readTemperature();

f = dht.readTemperature(true);

if (isnan(h) || isnan(t) || isnan(f))

{

Serial.println("Failed to read from DHT sensor!");

return;

}

hif = dht.computeHeatIndex(f, h);

hic = dht.computeHeatIndex(t, h, false);

Serial.print("Humidity: ");

Serial.print(h);

Serial.print(" %\t");

Serial.print("Temperature: ");

Serial.print(t);

Serial.print(" *C ");

Serial.print(f);

Serial.print(" *F\t");

Serial.print("Heat index: ");

Serial.print(hic);

Serial.print(" *C ");

Serial.print(hif);

Serial.println(" *F");

}

//////////////////////////////////////////////////////////////////////

CAYENNE_IN(3)

{

int currentValue=getValue.asInt();

if(currentValue==1){digitalWrite(D0,LOW);}

else{digitalWrite(D0,HIGH);}

}

//////////////////////////////////////////////////////////////////////

CAYENNE_IN(4)

{

int currentValue=getValue.asInt();

if(currentValue==1){digitalWrite(D1,LOW);}

else{digitalWrite(D1,HIGH);}

}

//////////////////////////////////////////////////////////////////////

CAYENNE_IN(5)

{

int currentValue=getValue.asInt();

if(currentValue==1){digitalWrite(D2,LOW);}

else{digitalWrite(D2,HIGH);}

}

//////////////////////////////////////////////////////////////////////

CAYENNE_IN(6)

{

int currentValue=getValue.asInt();

if(currentValue==1){digitalWrite(D3,LOW);}

else{digitalWrite(D3,HIGH);}

}

//////////////////////////////////////////////////////////////////////