I want to add 2nd sensor for my project. example pir sensor 1 is for gsm and relay and 2nd sensor is for buzzer, I dont know how to do it please help!

Projects General Guidance
1

#include <SoftwareSerial.h>
SoftwareSerial SIM900(2, 3);
String textForSMS;

int pirsensor = 10;
int buzzer = 9;
int relay = 11;

void setup() {
randomSeed(analogRead(0));
Serial.begin(9600);
SIM900.begin(9600);
Serial.println(" logging time completed!");
pinMode(pirsensor, INPUT);
pinMode(buzzer, OUTPUT);
pinMode(relay, OUTPUT);
digitalWrite(buzzer, LOW);
digitalWrite(relay, HIGH);
delay(100);

}

void loop() {

if ( digitalRead(pirsensor) == HIGH) //
{
textForSMS = "\Warning Motion Detected!!";
sendSMS(textForSMS);
Serial.println(textForSMS);
Serial.println("message sent.");
delay(2000);

digitalWrite(relay, LOW);
digitalWrite(buzzer, HIGH);
             noTone(9);
delay(50); tone (9, 261);

delay (1000);

tone (9, 3000);
delay (500);

tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);
tone (9, 3000);
delay (500);

noTone(9);
delay(5000);

}
if ( digitalRead(pirsensor) == LOW) //
{
digitalWrite(buzzer, LOW);
delay(100);

digitalWrite(relay, HIGH);
delay(300);

}

}

void sendSMS(String message)
{
SIM900.print("AT+CMGF=1\r");
delay(1000);
SIM900.println("AT + CMGS = "+639914466199"");

delay(1000);
SIM900.println(message);
SIM900.println((char)26);
delay(1000);
SIM900.println();

}

2

Welcome to the Forum! Read the forum guidelines to see how to properly ask a question and some good information on making a good post. You will get faster and better help if you post all your code as requested by the forum guidelines. Also please describe what the hardware do you use.

Please go back and fix your original post.

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Please help us help you.

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

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Please describe the problem better then you just did.

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