Python Picamera with GPIO Zero

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Python Picamera with GPIO Zero Introducing the camera board and Python module

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Raspberry Pi camera module - 5Mpx / 8Mpx - Full HD - Photo & video - Command line - Python module - Infra-red camera

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Connect the camera

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Add a GPIO Button

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Boot the Pi and open Python 3

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IDLE Python Shell >>> from picamera import PiCamera >>> from gpiozero import Button >>> camera = PiCamera() >>> button = Button(17) >>> button.when_pressed = camera.start_preview >>> button.when_released = camera.stop_preview

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Open a new file ● File > New File ● File > Save ● Save as camera.py

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Take a selfie from picamera import PiCamera from time import sleep camera = PiCamera() camera.start_preview() sleep(3) camera.capture("/home/pi/image.jpg") camera.stop_preview() Save and run: Ctrl + S F5

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Add GPIO Button code from picamera import PiCamera from gpiozero import Button from time import sleep camera = PiCamera() button = Button(17) camera.start_preview() button.wait_for_press() sleep(3) camera.capture("/home/pi/button.jpg") camera.stop_preview()

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Add a loop camera.start_preview() for i in range(5): button.wait_for_press() sleep(3) camera.capture("/home/pi/button%s.jpg" % i) camera.stop_preview()

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Picamera effects

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Picamera effects camera.start_preview() button.wait_for_press() camera.image_effect = 'negative' sleep(5) camera.capture("/home/pi/negative.jpg") camera.stop_preview() Try more effects: - negative - colorswap - sketch - emboss

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Picamera effects import random camera.start_preview() for i in range(5): button.wait_for_press() effect = random.choice(list(camera.IMAGE_EFFECTS)) camera.image_effect = effect camera.annotate_text = effect sleep(5) camera.capture("/home/pi/%s.jpg" % effect) camera.stop_preview() Try more effects: - negative - colorswap - sketch - emboss

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Documentation and help guides ● picamera.readthedocs.io ● gpiozero.readthedocs.io ● raspberrypi.org/resources ● raspberrypi.org/education/downloads