A fellow organizer gave [Kieran] a [Harry Potter] Magic Candle, which allows him to light the toy with the wave of his IR-enabled wand. He was told to “make it do something cool”, so he took a ...

The Magic Wand Sensor does exactly that ... At its core, the device is triggered by the IR light generated by magic wands like those from Great Wolf Lodge’s MagiQuest. You connect the sensor ...

Is it magic? No, it’s a neat hack that uses ... The basic idea is that a retroreflective dot on the end of the wand reflects light from a set of infra-red LEDs around the camera.