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Enabling camera on your RPi

• sudo raspi-config
  

Terminal commands

• To take a picture

  raspistill -o filename.jpg
  

• To play a recorded h264 video

  omxplayer filename.h264
  

• To record a slow motion video (10 seconds, resolution 640×480 pixels, 90 frames per second)

  raspivid -w 640 -h 480 -fps 90 -t 10000 -o filename.h264

Installing Python API for RPi camera

• sudo apt-get install python-picamera python3-picamera python-rpi.gpio
  

Python code samples

• Preview and capture a photo

  import time
  import picamera
  with picamera.PiCamera() as camera:
      camera.start_preview()
      time.sleep(10)
      camera.capture('filename.jpg')
      camera.stop_preview()
  

• Capturing multiple photos

  import time
  import picamera
  with picamera.PiCamera() as camera:
      i = 0
      while True:
          camera.start_preview()
          time.sleep(1)
          camera.capture(str(i)+(".jpg"))
          i += 1
          time.sleep(5)
  

• Capturing photo when push switch pressed
  * connect a push switch to GPIO2 & GND
  * use current timestamp as filename
  * save JPG when push switch pressed

  from time import gmtime, strftime, sleep
  import picamera
  import RPI.GPIO as GPIO
  GPIO.setmode(GPIO.BCM)
  button=2
  GPIO.setup(button,GPIO.IN,pull_up_down=PIO.PUD_UP)
  while True:
      with picamera.PiCamera() as camera:
          camera.resolution = 1920,1080
          GPIO.wait_for_edge(button, GPIO.FALLING)
          camera.start_preview()
          sleep(2)
          camera.capture(strftime("%Y%m%d%H%M%S",gmtime())+'.jpg')
          camera.stop_preview()
  

  A photo posted by @le_g_end on Feb 27, 2016 at 11:30am PST

  #raspberrypi #camera & #pushswitch

  A video posted by @le_g_end on Feb 27, 2016 at 11:39am PST

• Recording a 10 seconds video

  from time import sleep
  import picamera
  with picamera.PiCamera() as camera:
      camera.start_recording('filename.h264')
      sleep(10)
      camera.stop_recording()

• Video recording and playback

  import os
  while True:
      os.system("raspivid -w 640 -h 480 -fps 90 -t 10000 -o filename.h264")
      os.system("omxplayer filename.h264")
  

Reference

• Python Picamera
• PiCamera Documentation