picamera2 library basics in Raspberry Pi - Mini Project: Build & Apply

Picamera2 Library Basics

📖 Scenario: You have a Raspberry Pi with a camera module. You want to take a photo using the picamera2 library. This project will guide you step-by-step to set up the camera, configure it, capture an image, and save it.

🎯 Goal: Build a simple Python program that uses the picamera2 library to take a photo and save it as test.jpg.

📋 What You'll Learn

Use the Picamera2 class from the picamera2 library

Create a camera configuration for still images

Start the camera before capturing

Capture an image and save it as test.jpg

Print a confirmation message after saving the photo

💡 Why This Matters

🌍 Real World

Taking photos with a Raspberry Pi camera module is useful for home security, nature photography, or DIY projects.

💼 Career

Understanding how to control hardware like cameras programmatically is valuable for roles in embedded systems, robotics, and IoT development.

1

Import and create Picamera2 instance

Import the Picamera2 class from the picamera2 library and create a variable called picam2 as an instance of Picamera2().

Raspberry Pi

# Import Picamera2 and create an instance called picam2
# Your code here

Hint

Use from picamera2 import Picamera2 to import, then picam2 = Picamera2() to create the camera object.

2

Configure the camera for still capture

Create a variable called config by calling picam2.create_still_configuration(). Then apply this configuration to picam2 using picam2.configure(config).

Raspberry Pi

from picamera2 import Picamera2
picam2 = Picamera2()
# Create a still image configuration and apply it
# Your code here

Hint

Use create_still_configuration() to get the config, then configure() to set it.

3

Start the camera and capture an image

Start the camera by calling picam2.start(). Then capture an image by calling picam2.capture_file('test.jpg') to save the photo as test.jpg.

Raspberry Pi

from picamera2 import Picamera2
picam2 = Picamera2()
config = picam2.create_still_configuration()
picam2.configure(config)
# Start the camera and capture an image to 'test.jpg'
# Your code here

Hint

Call start() before capturing. Use capture_file('test.jpg') to save the photo.

4

Print confirmation message

Print the message "Photo saved as test.jpg" to confirm the photo was taken and saved.

Raspberry Pi

from picamera2 import Picamera2
picam2 = Picamera2()
config = picam2.create_still_configuration()
picam2.configure(config)
picam2.start()
picam2.capture_file('test.jpg')
# Print confirmation message
# Your code here

Hint

Use print("Photo saved as test.jpg") to show the message.