https://video.igem.org/videos/watch/596e8859-9c77-4313-aecb-7f51d361afab Movie 1. Operation test of the ratchet mechanism The ratchet mechanism is driven by moving a lever back and forth by hand. Each back-and-forth stroke makes the pawl advance the gear, and the gear rotates in only one direction. This allows the number of tips to be recorded as the angle of the gear, without using electricity. Note: The mechanism was operated by moving the lever by hand, not by liquid-driven tipping (15 s). Thu, 15 Oct 2026 15:55:46 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://video.igem.org https://video.igem.org/client/assets/images/icons/icon-1500x1500.png https://video.igem.org/videos/watch/596e8859-9c77-4313-aecb-7f51d361afab All rights reserved, unless otherwise specified in the terms specified at https://video.igem.org/about and potential licenses granted by each content's rightholder.