When in an Arduino project digital input ports are short, this library may be a solution. A tap changer can be used on an analogue input line. The pins of the tap changer have to be connected by resistors and the ends must be connected to 5 City and GND. After learning up to 16 analog values the get() method returns the internet number of the corresponding switch position.
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Copyright (c) Nibble-arts. All right reserved. Copyright (c) Thomas Winkler. All right reserved.
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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