/*** www.arduinopoint.com ***/
/*** Arduino with PIR Sensor LED and Buzzer ***/
int PIRSensor = 2; //Define PIR Sensor pin
int Buzzer = 13; //PWM (~) pin
int SensorValue = 0; // Initializing the value as zero at the beginning
void setup() {
pinMode(Buzzer, OUTPUT);
pinMode(PIRSensor, INPUT);
Serial.begin(9600);
}
void loop() {
SensorValue = digitalRead(PIRSensor); // The value read from PIR Sensor pin 2 will be assigned to 'SensorValue'
if(SensorValue == HIGH){
tone(Buzzer, 5000); //the buzzer sound frequency at 5000 Hz. The frequency range is from 31 Hz to 65535 Hz.
Serial.println("Motion Detected"); // Print this text in Serial Monitor
}
else
{
noTone(Buzzer);
Serial.println("Motion not Detected");
}
}
DAH LINKKAN SYSTEM NGN PIR :
#include <LiquidCrystal.h> // includes the LiquidCrystal Library
#include <Keypad.h>
int PIRSensor = 9; //Define PIR Sensor pin
int buzzer = 8; //PWM (~) pin
int SensorValue = 0; // Initializing the value as zero at the beginning
long duration;
int distance, initialDistance, currentDistance, i;
int screenOffMsg =0;
String password="1234";
String tempPassword;
boolean activated = false; // State of the alarm
boolean isActivated;
boolean activateAlarm = false;
boolean alarmActivated = false;
boolean enteredPassword; // State of the entered password to stop the alarm
boolean passChangeMode = false;
boolean passChanged = false;
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keypressed;
//define the cymbols on the buttons of the keypads
char keyMap[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = {14, 15, 16, 17}; //Row pinouts of the keypad
byte colPins[COLS] = {18, 19, 20, 21}; //Column pinouts of the keypad
Keypad myKeypad = Keypad( makeKeymap(keyMap), rowPins, colPins, ROWS, COLS);
LiquidCrystal lcd(1, 2, 4, 5, 6, 7); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)
void setup() {
lcd.begin(16,2);
pinMode(buzzer, OUTPUT); // Set buzzer as an output
pinMode(PIRSensor, INPUT);
Serial.begin(9600);
}
void loop() {
if (activateAlarm) {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Alarm will be");
lcd.setCursor(0,1);
lcd.print("activated in");
int countdown = 9; // 9 seconds count down before activating the alarm
while (countdown != 0) {
lcd.setCursor(13,1);
lcd.print(countdown);
countdown--;
tone(buzzer, 700, 100);
delay(1000);
}
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Alarm Activated!");
initialDistance = getDistance();
activateAlarm = false;
alarmActivated = true;
}
if (alarmActivated == true){
currentDistance = getDistance() + 10;
if ( currentDistance < initialDistance) {
tone(buzzer, 1000); // Send 1KHz sound signal
lcd.clear();
enterPassword();
}
}
if (!alarmActivated) {
if (screenOffMsg == 0 ){
lcd.clear();
lcd.setCursor(0,0);
lcd.print("A - Activate");
lcd.setCursor(0,1);
lcd.print("B - Change Pass");
screenOffMsg = 1;
}
keypressed = myKeypad.getKey();
if (keypressed =='A'){ //If A is pressed, activate the alarm
tone(buzzer, 1000, 200);
activateAlarm = true;
}
else if (keypressed =='B') {
lcd.clear();
int i=1;
tone(buzzer, 2000, 100);
tempPassword = "";
lcd.setCursor(0,0);
lcd.print("Current Password");
lcd.setCursor(0,1);
lcd.print(">");
passChangeMode = true;
passChanged = true;
while(passChanged) {
keypressed = myKeypad.getKey();
if (keypressed != NO_KEY){
if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
keypressed == '8' || keypressed == '9' ) {
tempPassword += keypressed;
lcd.setCursor(i,1);
lcd.print("*");
i++;
tone(buzzer, 2000, 100);
}
}
if (i > 5 || keypressed == '#') {
tempPassword = "";
i=1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Current Password");
lcd.setCursor(0,1);
lcd.print(">");
}
if ( keypressed == '*') {
i=1;
tone(buzzer, 2000, 100);
if (password == tempPassword) {
tempPassword="";
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Set New Password");
lcd.setCursor(0,1);
lcd.print(">");
while(passChangeMode) {
keypressed = myKeypad.getKey();
if (keypressed != NO_KEY){
if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
keypressed == '8' || keypressed == '9' ) {
tempPassword += keypressed;
lcd.setCursor(i,1);
lcd.print("*");
i++;
tone(buzzer, 2000, 100);
}
}
if (i > 5 || keypressed == '#') {
tempPassword = "";
i=1;
tone(buzzer, 2000, 100);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Set New Password");
lcd.setCursor(0,1);
lcd.print(">");
}
if ( keypressed == '*') {
i=1;
tone(buzzer, 2000, 100);
password = tempPassword;
passChangeMode = false;
passChanged = false;
screenOffMsg = 0;
}
}
}
}
}
}
}
}
void enterPassword() {
int k=5;
tempPassword = "";
activated = true;
lcd.clear();
lcd.setCursor(0,0);
lcd.print(" *** ALARM *** ");
lcd.setCursor(0,1);
lcd.print("Pass>");
while(activated) {
keypressed = myKeypad.getKey();
if (keypressed != NO_KEY){
if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
keypressed == '8' || keypressed == '9' ) {
tempPassword += keypressed;
lcd.setCursor(k,1);
lcd.print("*");
k++;
}
}
if (k > 9 || keypressed == '#') {
tempPassword = "";
k=5;
lcd.clear();
lcd.setCursor(0,0);
lcd.print(" *** ALARM *** ");
lcd.setCursor(0,1);
lcd.print("Pass>");
}
if ( keypressed == '*') {
if ( tempPassword == password ) {
activated = false;
alarmActivated = false;
noTone(buzzer);
screenOffMsg = 0;
}
else if (tempPassword != password) {
lcd.setCursor(0,1);
lcd.print("Wrong! Try Again");
delay(2000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print(" *** ALARM *** ");
lcd.setCursor(0,1);
lcd.print("Pass>");
}
}
}
}
// Custom function for the Ultrasonic sensor
long getDistance() {
SensorValue = digitalRead(PIRSensor); // The value read from PIR Sensor pin 2 will be assigned to 'SensorValue'
if(SensorValue == HIGH){
tone(buzzer, 5000); //the buzzer sound frequency at 5000 Hz. The frequency range is from 31 Hz to 65535 Hz.
Serial.println("Motion Detected"); // Print this text in Serial Monitor
}
else
{
noTone(buzzer);
Serial.println("Motion not Detected");
}
}