When everything is powered up, this build behaves like the prop it copies. Bring the ring's green face against the square socket on the lantern's side port and the internal LEDs light up green, while the two pieces produce matching electric hums and mechanical power-up sounds together. With a translucent green faceplate seated in the lantern, tapping the ring against it once more sets off the same light and audio response. It is a replica of the power battery from the show Lanterns, and the interaction between the two props is what makes it special.
The construction work behind it is thorough. All printed parts were done in PETG on an A1 mini at 230°C, and the model was designed in Fusion. The electronics were soldered by hand and the ESP32 was programmed through Arduino. The lantern body is cylindrical with a ribbed translucent green middle, finished with antiqued brass- or bronze-painted end caps, decorative piping and a swinging overhead handle. The patina on the metal sections came from black acrylic paint worked in with sanding, then the whole thing was sanded and sealed with a gloss top coat.
The ring deserves its own mention: an antiqued metallic band set with small green studs around a central translucent green face. The screws are there because they match the ones seen in the show, which is the kind of detail I appreciate.
One open point for anyone hoping to build their own: the maker has stated the files are not for sale, so this stays a one-off for now. There is also an NFC tag upgrade mentioned, with a phone serving as the reader for it.