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The DropBot test board is a printed circuit board with a 10 pF capacitor connected to each of the 120 actuation channels. Each capacitor simulates the equivalent capacitance between an electrode on a DMF chip covered by a liquid droplet and the top plate counter electrode.
For more information, please visit https://sci-bots.com
This design is open-source hardware released under a Creative Commons Attribution-ShareAlike licence.