vinayyn · October 5, 2023 18:27 · jaddas · Aug 26, 2018 · Arnabbaban · Feb 17, 2019
diff --git a/smart.ino b/smart.ino
 #include<SoftwareSerial.h>
 SoftwareSerial GPRS(5, 6);
 int buzzerPin = 8;                          //Pin number the buzzer is connected
 int echoPin = 11;                           // Echo Pin of the ultrasonic sensor
 int trigPin = 12;                           // Trigger Pin of the ultrasonic sensor
 unsigned long previousMillis = 0;           //This will be used to store the millisecnd value after each time the buzzer is triggered. This is used because delay function is not used for the buzzer timing.
 int maxBeepInterval = 1000;                 //Max beep interval
 int minBeebInterval = 300;                   //Min beep interval
 int frequency = 1000;                       //Buzzer frequency in Hz
 long distance;                              //Distance of the object from sensorlong echoTime;                              //Time taken for the echo
 int triggerAlarmDistance = 10;             //Buzzer will be triggered if the distance is less than this value. (cm)
 void setup()
 {
   pinMode(buzzerPin, OUTPUT);               //Set pin modes 
  pinMode(echoPin, INPUT);  
  pinMode(trigPin, OUTPUT); 
  GPRS.begin(9600);               // the GPRS baud rate 
  Serial.begin(9600);             // the Serial port of Arduino baud rate. 
  delay(500);
  }
 void loop()
 {   
 digitalWrite(trigPin, LOW);                  //Set the trigger pin of the SR04 sensor to low  
 delayMicroseconds(2);    
 digitalWrite(trigPin, HIGH);                //Set the trigger pin of the SR04 sensor to high which will which will send a pulse.  
 delayMicroseconds(10);    
 digitalWrite(trigPin, LOW);                 //Set the trigger pin of the SR04 sensor to low  
 echoTime = pulseIn(echoPin, HIGH);          //Reads a pulse (either HIGH or LOW) on a pin. For example, if value is HIGH, pulseIn() waits for the pin to go HIGH, starts timing, then waits for the pin to go LOW and stops timing. Returns the length of the pulse in microseconds or 0 if no complete pulse was received within the timeout.                                              //https://www.arduino.cc/en/Reference/PulseIn                                          
 distance = echoTime * 0.0340/2;  
 if(distance < triggerAlarmDistance) 
 {   
 unsigned long currentMillis = millis();    
 int val = map(distance, 2, triggerAlarmDistance, minBeebInterval, maxBeepInterval);     
 sendSMS();  
 Serial.println("Sent SMS!");   
 Serial.println( "dustbin is reached max level");  
 delay(10);
 if (currentMillis - previousMillis >= val) 
 {     
 tone(buzzerPin, frequency, val * 0.75);  //Trigger the buzzer (Buzzer pin, frequency, duration). Here durationn is set to 75% of the time before it will be triggered next.         
 previousMillis = currentMillis;          //Save current millisend value when the buzzer is triggered.     
 } 
 }    
 delay(6000);                                  //Delay 60ms before next reading.
 }

 void sendSMS() 
 { 
 GPRS.println("AT+CMGF=1");    // Set modem to text mode 
 delay(2000);
 GPRS.write("AT+CMGS=");      // Start composing message  
 GPRS.write(0x22);            // hex equivalent of double-quote '"' 
 GPRS.write("+xxxxxxx"); // the number to send the SMS to  
 GPRS.write(0x22);  GPRS.write(0x0D);            // hex equivalent of Carraige return  
 GPRS.write(0x0A);            // hex equivalent of newline  
 delay(2000); 
 GPRS.print("ID:=1 LOCATION:=VVIT THE ABOVE DUSTBIN REACHED ITS MAXIMUM CAPACITY PLEASE COME AND COLLECT TO KEEP CITY CLEAN");  // Send the text message to the GSM module  
 GPRS.write(0x0D);            // hex equivalent of Carraige return  
 GPRS.write(0x0A);            // hex equivalent of newline  
 delay(1000); 
 GPRS.write(26);        // equivalent of CTRL-Z  delay(3000);
 }
	#include<SoftwareSerial.h>
	SoftwareSerial GPRS(5, 6);
	int buzzerPin = 8; //Pin number the buzzer is connected
	int echoPin = 11; // Echo Pin of the ultrasonic sensor
	int trigPin = 12; // Trigger Pin of the ultrasonic sensor
	unsigned long previousMillis = 0; //This will be used to store the millisecnd value after each time the buzzer is triggered. This is used because delay function is not used for the buzzer timing.
	int maxBeepInterval = 1000; //Max beep interval
	int minBeebInterval = 300; //Min beep interval
	int frequency = 1000; //Buzzer frequency in Hz
	long distance; //Distance of the object from sensorlong echoTime; //Time taken for the echo
	int triggerAlarmDistance = 10; //Buzzer will be triggered if the distance is less than this value. (cm)
	void setup()
	{
	pinMode(buzzerPin, OUTPUT); //Set pin modes
	pinMode(echoPin, INPUT);
	pinMode(trigPin, OUTPUT);
	GPRS.begin(9600); // the GPRS baud rate
	Serial.begin(9600); // the Serial port of Arduino baud rate.
	delay(500);
	}
	void loop()
	{
	digitalWrite(trigPin, LOW); //Set the trigger pin of the SR04 sensor to low
	delayMicroseconds(2);
	digitalWrite(trigPin, HIGH); //Set the trigger pin of the SR04 sensor to high which will which will send a pulse.
	delayMicroseconds(10);
	digitalWrite(trigPin, LOW); //Set the trigger pin of the SR04 sensor to low
	echoTime = pulseIn(echoPin, HIGH); //Reads a pulse (either HIGH or LOW) on a pin. For example, if value is HIGH, pulseIn() waits for the pin to go HIGH, starts timing, then waits for the pin to go LOW and stops timing. Returns the length of the pulse in microseconds or 0 if no complete pulse was received within the timeout. //https://www.arduino.cc/en/Reference/PulseIn
	distance = echoTime * 0.0340/2;
	if(distance < triggerAlarmDistance)
	{
	unsigned long currentMillis = millis();
	int val = map(distance, 2, triggerAlarmDistance, minBeebInterval, maxBeepInterval);
	sendSMS();
	Serial.println("Sent SMS!");
	Serial.println( "dustbin is reached max level");
	delay(10);
	if (currentMillis - previousMillis >= val)
	{
	tone(buzzerPin, frequency, val * 0.75); //Trigger the buzzer (Buzzer pin, frequency, duration). Here durationn is set to 75% of the time before it will be triggered next.
	previousMillis = currentMillis; //Save current millisend value when the buzzer is triggered.
	}
	}
	delay(6000); //Delay 60ms before next reading.
	}

	void sendSMS()
	{
	GPRS.println("AT+CMGF=1"); // Set modem to text mode
	delay(2000);
	GPRS.write("AT+CMGS="); // Start composing message
	GPRS.write(0x22); // hex equivalent of double-quote '"'
	GPRS.write("+xxxxxxx"); // the number to send the SMS to
	GPRS.write(0x22); GPRS.write(0x0D); // hex equivalent of Carraige return
	GPRS.write(0x0A); // hex equivalent of newline
	delay(2000);
	GPRS.print("ID:=1 LOCATION:=VVIT THE ABOVE DUSTBIN REACHED ITS MAXIMUM CAPACITY PLEASE COME AND COLLECT TO KEEP CITY CLEAN"); // Send the text message to the GSM module
	GPRS.write(0x0D); // hex equivalent of Carraige return
	GPRS.write(0x0A); // hex equivalent of newline
	delay(1000);
	GPRS.write(26); // equivalent of CTRL-Z delay(3000);
	}