The sign near the wand display highlights some of the features of the second generation, including earning House Points and joining the Dueling Club. The sign has a QR code that brings guests to ...

However, as [Ancient] shows us, you can turn them into a surprisingly nifty little display if you’re so inclined. The build starts by removing the fiber optic bundle from the wand. One end is ...

The basic idea is that each wand has a reflector in the tip, which coupled with strong IR illumination makes them glow on camera. This allows for easy gesture recognition using computer vision ...