You can also check for newer versions of the sketches at the author’s web page at Click here to download a compressed zip file (2.5 MBytes) containing the customized libraries, standard libraries and sketches for use with the projects in this book. Here you will find PDF files for the sketches and libraries that you can print out and study, as well as the sketch and library files themselves for use with the Arduino projects in this book. You've arrived at the support page for ARRL's Arduino for Ham Radio by Glen Popiel, KW5GP
