Invilab Designed the Electronics and Control App for the Prop 'Dejavu' in Mystery Arena
The prop's compact electronics and dedicated control app show how practical engineering constraints on set-limited space, long wear time, wireless interference-shaped the design of a key film object.
Reporting from 1 sources: ASCII.jp.
Invilab handled the internal electronic circuit design and control app development for the prop "dejavu" in the film Mystery Arena, released May 22, 2026. The prop fits a battery, LEDs, communication board, and charging connector into a casing roughly 4.5 cm tall and 1-2 cm wide. The app controls brightness, color, and five blinking patterns remotely.
Invilab Co., Ltd. was responsible for the electronic circuit design inside the casing and the development of the control app for the prop "dejavu" in the film Mystery Arena, which opened nationwide on May 22, 2026. The prop is roughly 4.5 cm tall with a base width of 1 to 2 cm. Inside that space, invilab mounted a battery, LEDs, a control board with communication functions, and a charging connector. The design switched from button cell to battery drive after tests showed button cells could not deliver enough light for filming. Power-saving logic was added to handle long wear periods on set.
The control app allows remote adjustment of LED brightness, color (blue, red, green, or RGB values), and five blinking patterns. It also displays a signal strength meter, battery level, and internal temperature. If the connection drops, the LEDs switch to a power-saving state. The exterior was produced by Inac Co., Ltd., using gold vapor deposition for the main unit, diffused milky white for the sub-unit, and elastomer rubber for the bridge attachment.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.