Before you install Chronos you should ensure the Arduino Time library is available on your system, to act as the timekeeper/clock source, and that should be all the prerequisites needed.
Chronos is Copyright (C) 2015, 2016 Pat Deegan
and released under the LGPL.
Chronos is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Chronos 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 Public License for more details.
A complete copy of the license may be found in the LICENSE file with the source code or here.
Getting the Code!
For Arduino users, installation is be as simple as opening the Arduino IDE, going to Sketch -> Include Library -> Manage Libraries… and doing a little search for “chronos” in the search box. Click install, voila!
If you don’t use the Arduino IDE or just want easy access to the code, you can simply download the source.
Once it’s installed, if you’re using Arduino, you should restart the IDE and then you’ll find the examples under File -> Examples -> Chronos, otherwise just check in the examples/ directory.
I hope this library helps you create wonderful projects. Please share you results with the world, and get back to me with any contributions for the library or comments.