Live cam

Configuration of a live cam.

Next, we want to configure a live cam connected to the Raspberry. With a cam, there can be multiple applications:

  • 24h live stream of whatever. Exposing a port in the local network should suffice.

  • Take a picture at a certain point of the day and save it. Then, timelapse can be done.


To use cv2:

  • Create virtual environment python3 -m venv venv

  • Activate it . venv/bin/activate

  • Install cv2 pip install opencv-python

  • Install extra libs required sudo apt-get install libatlas-base-dev

  • Run following script

import cv2
import time

cap = cv2.VideoCapture(0)
ret, frame =

def takePicture():
    (grabbed, frame) =
    showimg = frame
    # cv2.imshow('img1', showimg)  # display the captured image
    #time.sleep(1) # Wait 300 miliseconds
    image = 'test-image.png'
    cv2.imwrite(image, frame)
    return image


Play with waitKey(*) to let some seconds to focus light. Also, adjust cam.

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