Introducing the Raspberry Pi camera module and Python picamera library

1. PYTHON PICAMERA
Introducing the camera board
and Python module

2. WHO'S THIS GUY?
Ben Nuttall
Development & Outreach
Raspberry Pi Education Team
@ben_nuttall
ben@raspberrypi.org
github.com/bennuttall

3. CONNECT THE CAMERA

4. COMMAND LINE

5. RASPI CONFIG
$ sudo raspi­config

6. ENABLE CAMERA

7. ENABLE CAMERA

8. REBOOT

9. COMMAND LINE
$ ls

10. COMMAND LINE
$ raspistill ­o
image1.jpg

11. COMMAND LINE
$ ls

12. BOOT TO DESKTOP
$ startx

13. OPEN FILE MANAGER

14. OPEN LXTERMINAL

15. OPEN IDLE AS ROOT USER
$ sudo idle3 &
FILE > NEW WINDOW
SAVE WITH Ctrl + S

16. TAKE A PICTURE WITH PYTHON
from picamera import PiCamera
from time import sleep
with PiCamera() as camera:
camera.start_preview()
sleep(3)
camera.capture('/home/pi/image2.jpg')
camera.stop_preview()

17. SAVE & RUN
Ctrl + S
F5

18. ADD A GPIO BUTTON

19. ADD GPIO TO CODE
from picamera import PiCamera
from time import sleep
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.IN, GPIO.PUD_UP)
with PiCamera() as camera:
camera.start_preview()
GPIO.wait_for_edge(17, GPIO.FALLING)
sleep(3)
camera.capture('/home/pi/image2.jpg')
camera.stop_preview()

20. ADD A LOOP
with PiCamera() as camera:
camera.start_preview()
GPIO.wait_for_edge(17, GPIO.FALLING)
for i in range(5):
sleep(3)
camera.capture('/home/pi/image%s.jpg' % i)
camera.stop_preview()

21. WHAT'S THE DIFFERENCE?
GPIO.wait_for_edge(17, GPIO.FALLING)
for i in range(5):
sleep(3)
camera.capture('/home/pi/image%s.jpg' % i)
for i in range(5):
GPIO.wait_for_edge(17, GPIO.FALLING)
camera.capture('/home/pi/image%s.jpg' % i)
sleep(3)

22. WHAT CAN YOU DO?

23. WHAT CAN YOU DO?