Raspberry Pi motion detection and notification program

PiDoorCam updated

This is the amended, latest version of my Raspberry Pi program to watch the street outside, detect change, and send a picture to another computer for storage, and to my phone. I'm often in the back garden, and can't hear the doorbell; missing deliveries is rather annoying!

It no longer tries to take pictures when it's dark, not just because I don't have an infra-red camera and infra-red floodlights, but mainly because the street light outside flashes on and off all night, and I don't want hundreds of pictures of that!

You'll need to set up a Pushover account, which is free provided you don't send too many notifications, and a Ramdisk with a directory called /var/tmp on the Pi.

Program listing

# Program for PiDoorCam

# Detects motion, and when it spots some, takes a high resolution

# picture, and sends the picture to another computer, also

# a notification via Pushover, to my phone.

import io

import os

import picamera

import ftplib

import time

import datetime

from PIL import Image

import requests

import json

import schedule

camera = picamera.PiCamera()

picamera.PiCamera.CAPTURE_TIMEOUT = 30

# If we detect 100 pixels that changed by 30, we have seen movement.

pixels = 100

difference = 30

# Use the maximum resolution of the camera.

# This is for V1. V2 is 3280 x 2464.

# It's also correct for the ZeroCam.

width = 2592

height = 1944

# Internet lookup of sunrise and sunset at our location

def sunrise_sunset():

    global sunrise, sunset

    

    # Location of greenhouse is lat = yyyyy lon = xxxxx

    url = 'https://api.sunrise-sunset.org/json?lat=yyyyy&lng=xxxxx'

    response = requests.get(url)

    dict = response.json()

    res = dict.get('results')

    curtim = datetime.datetime.now()

    hm = res.get('sunrise').split(":")

    sunrise = curtim.replace(hour=int(hm[0])-1, minute=int(hm[1]))

    print("An hour before sunrise ",sunrise)

    

    hm = res.get('sunset').split(":")

    sunset = curtim.replace(hour=int(hm[0])+13, minute=int(hm[1]))

    print("An hour after sunset   ",sunset)

# I copied this voodoo motion detection from somewhere. Changed the timeout

#  setting above to prevent the occasional failures to complete captures.

# Only alter this if you know what you are doing!

def compare():

   camera.resolution = (100, 75)

   stream = io.BytesIO()

   format = 'bmp'

   camera.capture(stream, format)

   stream.seek(0)

   im = Image.open(stream)

   buffer = im.load()

   stream.close()

   return im, buffer

# Function to take a new high resolution picture, send it to another computer,

# send it to my phone, and then delete it.

def newimage(width, height):

    when = datetime.datetime.now()

    filename = "door-%04d%02d%02d-%02d%02d%02d.jpg" \

               % (when.year, when.month, when.day, when.hour, when.minute, when.second)

    camera.resolution = (width, height)

    camera.capture("/var/tmp/"+filename)

    connected = True

    ftp = ftplib.FTP()

    ftp.connect("computer-name")

    

    try:

        ftp.login("user-name","password")

    except ftplib.all_errors:

        connected = False

        print ("Failed to login to server.")

        ftp.quit()

        

    if connected:

        ftp.storbinary('STOR '+filename, open("/var/tmp/"+filename, "rb"))

        print ("Sent to server ", filename)

    ftp.quit()

# Code to send the Pushover message. Make picture smaller first.

# Note this uses a Ramdisk you must set up elsewhere.

    im = Image.open("/var/tmp/"+filename)

    im.resize((324,243),Image.ANTIALIAS)

    im.save("/var/tmp/"+filename)

    

    r = requests.post("https://api.pushover.net/1/messages.json", data = {

        "token": "you-need-to-get-a-token-from-pushover",

        "user": "you-need-to-get-a-user-name-from-pushover",

        "device": "your-device",

        "sound": "intermission",

        "message": filename

    },

    files = {

        "attachment": (filename, open("/var/tmp/"+filename, "rb"), "image/jpeg")

    })

   # Check r for problems - maybe put a delay here?

    if r.status_code != 200:

        print("Pushover message failed.")

    else:

        print("Pushover accepted the message.")

         

# Now delete the file.

    os.remove("/var/tmp/"+filename)

    # Delay to avoid being nasty to Pushover server.

    time.sleep(5)

# Main program.

camera.rotation = 0

print("Running door.py")

image1, buffer1 = compare()

# Find sunrise and sunset times at two in the morning, and once

# at startup.

schedule.every().day.at("02:00").do(sunrise_sunset)

sunrise_sunset()

while (True):

   # See if it's time to get sunrise and sunset.

   schedule.run_pending()

   image2, buffer2 = compare()

   changedpixels = 0

   for x in range(0, 100):

      for y in range(0, 75):

         pixdiff = abs(buffer1[x,y][1] - buffer2[x,y][1])

         if pixdiff > difference:

            changedpixels += 1

   # See if we think something moved.

   if changedpixels > pixels:

   # See if it's light enough to take a picture.

      now = datetime.datetime.now()

      if now > sunrise and now < sunset:

          newimage(width, height)

      else:

          print("A bit dark at ",now)

   image1 = image2

   buffer1 = buffer2