Connect Multiple Ultrasonic Sensor with Arduino

Interfacing of Multiple Ultrasonic Sensor with Arduino

HI in this tutorial you are going to learn how to interface multiple sensors with Arduino. I will be doing simulation on website called tinker CAD, It is really good website for startup learners

Link:https://www.tinkercad.com

Circuit Diagram of this project

Tutorial Video of this project

Code of this project

#include <LiquidCrystal.h> LiquidCrystal lcd(8,9,10,11,12,13); #define trigPin1 A1 #define echoPin1 A0 #define trigPin2 A3 #define echoPin2 A2 #define trigPin3 A5 #define echoPin3 A4 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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