First, as you might have guessed, you must scan a barcode from the CD you want to listen to. This barcode is parsed using MQTT to a home assistant. The Raspberry Pi has a script that checks for ...

When the Raspberry Pi 4 came out, [Frank Zhao] saw the potential to make a realtime 3D scanner that was completely handheld and self-contained. The device has an Intel RealSense D415 depth-sensing ...

At this point, you’re likely aware that you can store your wireless network’s credentials in a QR code, so that anyone who wants to connect with their smartphone need only scan the 2D barcode.