picamera + PIR

pir-cam.py

# -*- coding: utf8 -*-
import RPi.GPIO as GPIO
import time
import picamera
import datetime

SENSOR = 4
CAMDIR = '/cam'

GPIO.setmode(GPIO.BCM)
GPIO.setup(SENSOR, GPIO.IN, pull_up_down=GPIO.PUD_UP)
cam = picamera.PiCamera(resolution = (640,480))

def get_file_name():
    fn = datetime.datetime.now().strftime("%Y%m%d-%H%M%S.h264")
    d = fn[0:8]
    if not os.path.isdir(os.path.join(CAMDIR, d)):
        os.mkdir(os.path.join(CAMDIR, d))
    return os.path.join(CAMDIR, d, fn)

def recording(channel):
    if GPIO.input(SENSOR):
        fileName = get_file_name()
        print 'Start recording to ' + fileName
        #cam.start_preview()
        cam.start_recording(fileName)
        #camera.capture('foo.jpg')
    else:
        print 'Stop recording.'
        #cam.stop_preview()
        cam.stop_recording()

try:
    GPIO.add_event_detect(SENSOR, GPIO.BOTH, callback=recording)
    while True:
        time.sleep(100)
except:
    print 'Cleanup and quit.'
    GPIO.cleanup()
    cam.close()
    raise

按 7. Camera Hardware 的說明，其實 1926x972 15-30fps 才是符合硬體規格的設定，不過就先不管了...