/* ArduinoDRO + Tach V5.1 iGaging/AccuRemote Digital Scales Controller V3.3 Created 5 July 2014 Update 15 July 2014 Copyright (C) 2014 Yuriy Krushelnytskiy, http://www.yuriystoys.com Updated 08 August 2014 by Ryszard Malinowski http://www.rysium.com This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Added support for tachometer on axis T with accurate timing Added option to send rpm row data (time and count) Correction to retrieving scale sign bit. NOTE: This program supports hall-sensor to measure rpm. The tach output format for Android DRO is T