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. 2019 Nov 29;16:152. doi: 10.1186/s12984-019-0626-5

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Diagram of LeMMS. a Schematic diagram of the LeMMS. F_F is the finger exerted force, F_M the repulsive force between magnets, F_SW the force exerted by the micro-switch spring and X_F, X_M, X_SW are the respective distances from the rotation axis. The vertical linear displacement d is the first approximation of the rotation angle. b LeMMS half-shell with brass pin (a1), magnet (a2) and micro-switch (a3). c Illustration of the LeMMS assembled