Playing store just got really, really fun because you can now build your own LEGO barcode scanner. As you can see after the break, it works well and it’s fast like a real barcode scanner.

Whenever you run out of an ingredient, simply scan the item's barcode with the scanner connected to the Raspberry Pi. The Pi ...

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.