Infra-red bird box

Infra-red bird box activity for Scouts digital day

Transcript

1. Infra-red bird box camera
   Raspberry Pi Foundation
   UK Charity 1129409
   

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2. Raspberry Pi camera module
   ●
   5Mpx / 8Mpx
   ●
   Full HD
   ●
   Photo & video
   ●
   Command line
   ●
   Python module
   ●
   Infra-red camera variant
   ●
   30fps @ 1080p
   60fps @ 720p
   90fps @ 480p
   

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3. Night vision camera
   ●
   5Mpx
   ●
   Light sensors (LDR)
   ●
   Infra-red LEDs
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   Adjustable lens focus
   ●
   Compatible with official camera
   module
   

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4. Connect the camera
   

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5. Enable camera software
   

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6. Test the camera
   $ raspistill -k
   

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7. Open Thonny Python IDE
   

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8. Thonny Python IDE
   File editor – saved code
   Shell – testing code
   

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9. Python picamera
   from picamera import PiCamera
   from time import sleep
   camera = PiCamera()
   camera.start_preview(alpha=200)
   sleep(10)
   camera.stop_preview()
   

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10. Rotation
    from picamera import PiCamera
    from time import sleep
    camera = PiCamera()
    camera.rotation = 180
    camera.start_preview(alpha=200)
    sleep(10)
    camera.stop_preview()
    

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11. Still images
    from picamera import PiCamera
    from time import sleep
    camera = PiCamera()
    camera.start_preview(alpha=200)
    sleep(5)
    camera.capture('/home/pi/Desktop/image.jpg')
    camera.stop_preview()
    

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12. Text annotation
    from picamera import PiCamera
    from time import sleep
    camera = PiCamera()
    camera.start_preview(alpha=200)
    camera.annotate_text = "Hello world"
    sleep(5)
    camera.capture('/home/pi/Desktop/image.jpg')
    camera.stop_preview()
    

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13. Multiple capture
    from picamera import PiCamera
    from time import sleep
    camera = PiCamera()
    camera.start_preview(alpha=200)
    for i in range(5):
    sleep(5)
    camera.capture('/home/pi/Desktop/image{}.jpg'.format(i))
    camera.stop_preview()
    

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14. Video
    from picamera import PiCamera
    camera = PiCamera()
    camera.start_preview(alpha=200)
    camera.start_recording('/home/pi/video.h264')
    camera.wait_recording(10)
    camera.stop_recording()
    camera.stop_preview()
    

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15. Video playback
    $ omxplayer video.h264
    

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16. PIR Motion Sensor
    

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17. Motion sensor
    from picamera import PiCamera
    from gpiozero import MotionSensor
    camera = PiCamera()
    pir = MotionSensor(4)
    pir.when_motion = camera.start_preview
    pir.when_no_motion = camera.stop_preview
    

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18. Motion sensor photo trigger
    from picamera import PiCamera
    from gpiozero import MotionSensor
    from datetime import datetime
    def capture():
    timestamp = datetime.now().isoformat()
    camera.capture('/home/pi/{}.jpg'.format(timestamp))
    camera = PiCamera()
    pir = MotionSensor(4)
    pir.when_motion = capture
    

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19. Motion sensor video trigger
    from picamera import PiCamera
    from gpiozero import MotionSensor
    from datetime import datetime
    camera = PiCamera()
    pir = MotionSensor(4)
    while True:
    if pir.motion_detected:
    camera.start_preview(alpha=200)
    timestamp = datetime.now().isoformat()
    camera.start_recording('/home/pi/{}.h264'.format(timestamp))
    camera.wait_recording(10)
    camera.stop_recording()
    camera.stop_preview()
    

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20. Circular stream video
    from picamera import PiCamera, PiCameraCircularIO
    from gpiozero import MotionSensor
    camera = PiCamera()
    pir = MotionSensor(4)
    stream = PiCameraCircularIO(camera, seconds=20)
    camera.start_recording(stream, format='h264')
    try:
    while True:
    camera.wait_recording(1)
    if pir.motion_detected:
    camera.wait_recording(10)
    stream.copy_to('motion.h264')
    finally:
    camera.stop_recording()
    

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21. Infra-red bird box camera
    Raspberry Pi Foundation
    UK Charity 1129409
    

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