When the tool you need is out of reach, sometimes the best solution is to create one yourself. Single-board computers like the Raspberry Pi can really help speed up the process. When Eric, host of the That Project channel on YouTube, needed to read and generate QR codes, he built hardware to do it using a Pi running Open CV.

This particular project is built around a Raspberry Pi Zero 2 W, which is responsible for both scanning and processing QR codes. The project is aided by his ESP32 QR code generator which can be used to make custom codes on the spot. If you’re interested in other options for reading codes with a Raspberry Pi, check out our review of the Barcode Reader HAT.

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