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. 2012 Aug 27;12(9):11697–11711. doi: 10.3390/s120911697

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© 2012 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — (a) The PBS and a number of markers were attached to the bare foot to acquire simultaneous measurements of the navicular drop; (b) The timer circuit was used to measure the current capacitance of the sensor. The timer circuit was attached to the ankle using a Velcro band; (c) The sync box was located in field of view of the back camera of the MVSA system; (d) The sync box contained LED's to display the measurement number that was recorded by the back camera of the MVSA and a microcontroller to measure the frequency from the timer circuit.