Finally, open the Arduino IDE, select menu Sketch > Import Library. Extract the ZIP file, then rename the unzipped folder as 'Si5351'. Download a ZIP file of the library from the GitHub repository by using the 'Download ZIP' button at the right of the main repository page. If you need to or would like to install the library in the old way, then you can download a copy of the library in a ZIP file. By installing the library this way, you will always have notifications of future library updates, and can easily switch between library versions. Click on the entry in the list below, then click on the provided 'Install' button. To install it this way, simply go to the menu Sketch > Include Library > Manage Libraries., and then in the search box at the upper-right, type 'Etherkit Si5351'. The best way to install the library is via the Arduino Library Manager, which is available if you are using Arduino IDE version 1.6.2 or greater.

If you would like to support my library development efforts, I would ask that you please consider purchasing a Si5351A Breakout Board from my online store at sending a one-time PayPal tip, or subscribe to me on SubscribeStar for an ongoing contribution. Please feel free to use the Issues feature of GitHub if you run into problems or have suggestions for important features to implement. However, keep in mind that coding decisions are and will be made with those applications in mind first, so if you need something a bit different, please do fork this repository. This library is focused towards usage in RF/amateur radio applications, but it may be useful in other cases. It will allow you to control the Si5351 with an Arduino, and without depending on the proprietary ClockBuilder software from Silicon Labs. This is a library for the Si5351 series of clock generator ICs from Silicon Labs for the Arduino development environment.

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