竹知了 by sai · VibeVibi

竹知了 is a browser-based recreation of a traditional Chinese bamboo toy that makes chirping sounds when spun. The toy responds to circular finger motions on touchscreen or mouse, with sound intensity and pitch varying based on rotation speed. Built as a single HTML file with no dependencies, it includes real bamboo cricket audio samples processed into seamless loops, physics simulation for the hanging bamboo cylinder, and synthesis fallback. Mobile-first design with gesture support and optional device motion control on compatible phones.