How To Scan QR Codes With A Raspberry Pi + OpenCV + Python

All scripts dived into here will display decoded QR data live, one will also capture the information into a text file and the final will use specific QR codes to control the GPIO.
Full Article - https://core-electronics.com.au/tutorials/raspberry-pi/QR-codes-raspberry-pi.html

Make sure to use the Previous Raspberry Pi 'Buster' OS with this Guide.

Related Information
QR Code Creator - https://www.the-qrcode-generator.com/
Flashing 'Buster' OS onto a Raspberry Pi - https://core-electronics.com.au/tutorials/flash-buster-os-pi.html
Facial Recognition Raspberry Pi - https://core-electronics.com.au/tutorials/face-identify-raspberry-pi.html
Object and Animal Recognition With Raspberry Pi - https://core-electronics.com.au/tutorials/object-identify-raspberry-pi.html
Hand Tracking & Gesture Control With Raspberry Pi - https://core-electronics.com.au/tutorials/hand-identification-raspberry-pi.html
Use Your Phone to Control Your Raspberry Pi - https://core-electronics.com.au/tutorials/raspcontrol-raspberry-pi.html
Speed Camera Raspberry Pi - https://core-electronics.com.au/tutorials/detect-speed-raspberry-pi.html

Terminal Commands
sudo apt-get update

sudo apt-get install python3-opencv

sudo apt-get install libqt4-test python3-sip python3-pyqt5 libqtgui4 libjasper-dev libatlas-base-dev -y

pip3 install opencv-contrib-python==4.1.0.25

sudo modprobe bcm2835-v4l2

Cameras in combination with machine learning create the most powerful sensor you can ever put on a Raspberry Pi. Open-CV is a huge resource that helps solve real-time computer vision and image processing problems. To install it and the other required packages it is best done by typing and entering the above 5 lines into the Raspberry Pi Terminal. This guide focuses on QR (Quick Response) Codes. These are absolutely everywhere in our modern world and for great reason. Sharing a lot of similarities to barcodes, but instead of a laser, a camera is used to identify spaces between black and white squares markings. Encoding data this way is incredibly useful and, with machine learning, it has never been easier to decode their secrets. There are lots of standards and types of QR codes but this system will work with all common types.

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Raspberry Pi 4 Model B (4GB) Ultimate Kit Bundle (AVALIABLE!) - https://core-electronics.com.au/raspberry-pi-4-4gb-ultimate-kit.html

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Great Electronic Starter Kit by Kitronik (Breadboard, LEDs, Resistors + heaps more): https://core-electronics.com.au/catalog/product/view/sku/CE06405

Raspberry Pi 4 Power Supply: https://core-electronics.com.au/catalog/product/view/sku/CE06427

0:00 Intro
0:19 QR Code Overview
0:43 Creating Custom QR Codes
0:56 Open-CV
1:10 What You Need and Terminal Commands
1:58 Hardware Build
2:27 Code Download Location
2:44 Simple Code
3:14 Data Record Code
3:55 GPIO Control Code
4:45 The Pay Off
5:06 Where to Now
5:24 Outro