Connecting The PIR With Arduino In Python

Introduction

• In this article, I am going to explain about connecting the PIR with Arduino In Python.The output will be displayed in both sides in Python and the Arduino. It will send the message of what we have given to  print in the input.

Parts Of List

Hardware Requirement

• Arduino Uno
• PIR Sensor
• IR Sensor
• Bread Board
• Hook Up wires 

Software Requirement

• Arduino IDE
• Python 3.5.2 

PIR Sensor


Figure 1: PIR Sensor

• It is used to detect human movement around approximately 10m from the sensor.
• The actual range is between 5m to 12m.
• It is of high sensitivity and low noise.

Programming

Arduino Programming

int pirPin = 2;

int minSecsBetweenEmails = 60; // 1 min

long lastSend = -minSecsBetweenEmails * 1000l;

void setup()
{
  pinMode(pirPin, INPUT);
  Serial.begin(9600);
}

void loop()
{
  long now = millis();
  if (digitalRead(pirPin) == HIGH)
  {
    if (now > (lastSend + minSecsBetweenEmails * 1000l))
    {
      Serial.println("MOVEMENT");
      lastSend = now;
    }
    else
    {
      Serial.println("Too soon");
    }
  }
  delay(500);
}

Explanation

• In the Arduino part, it has been explained about the distance of the person at the time, it will have the output at the Serial monitor.
• The output will be displayed as "Too Soon".

Python Program

import time
import serial
import smtplib

TO = '[email protected]'
GMAIL_USER = '[email protected]'
GMAIL_PASS = 'putyourpasswordhere'

SUBJECT = 'Intrusion!!'
TEXT = 'Your PIR sensor detected movement'

ser = serial.Serial('COM4', 9600)

def send_email():
    print("Sending Email")
    smtpserver = smtplib.SMTP("smtp.gmail.com",587)
    smtpserver.ehlo()
    smtpserver.starttls()
    smtpserver.ehlo
    smtpserver.login(GMAIL_USER, GMAIL_PASS)
    header = 'To:' + TO + '\n' + 'From: ' + GMAIL_USER
    header = header + '\n' + 'Subject:' + SUBJECT + '\n'
    print header
    msg = header + '\n' + TEXT + ' \n\n'
    smtpserver.sendmail(GMAIL_USER, TO, msg)
    smtpserver.close()

while True:
    message = ser.readline()
    print(message)
    if message[0] == 'M' :
        send_email()
    time.sleep(0.5)

Explanation

• In this Python coding, it will be used to connect the PIR sensor and will give the output in Python shield. It will also be displayed as Too Soon.

Output

 

                                    Figure 2:Output