rasp_pi_motion_detect.py

import picamera
import picamera.array
import time

baseImage = []
nextImage = []

def examineImage():
    with picamera.PiCamera() as camera:
        camera.resolution = (64, 64)
        with picamera.array.PiRGBArray(camera) as output:
            camera.capture(output, 'rgb')
            image = output.array
    return image

def compareArrays(image1, image2):
    diff = 0
    for i in range(1, 60):
        #print(image1[i][0][0])
       # print(image2[i][0][0])
        if (image1[i][0][0] != image2[i][0][0]):
           diff += 1

    return diff
    
baseImage = examineImage()
while True:
    time.sleep(5)
    nextImage = examineImage()
    if compareArrays(baseImage, nextImage)>40:
        #motion
        print("motion detected")
        baseImage = examineImage()
    else:
        print("no motion detected")



print("Press Control-C to exit")