Hi,
sorry I did not explain it well.
It's the first attempt with due and this version.
From the site you indicate
I downloaded the FunctionGenerator.ino and Waveforms.h files, each inside a folder with the same name.
I do not know if that's also the way to save the Waveforms.h library, or must be in the same folder
with the .ino, with or without homonimous folder name, sorry I did not understand that point.
I loaded up the signal generator file .FunctionGenerator.ino into arduino 1.5.8 IDE
From the menu I selected add library and selected the file Waveforms.h but, with 1.5.8 nothing was written so I looked and found the deep sublevels with an empty folder at the bottom.
however, using the arduino version 1.0.6 an include command was written on the top of the C code script
when I added Waveforms.h library file, even it was not suited for.
There may be no .h file at the end of the tree because windows 7 does not allow a file copy command with so long a name. I could not drag the .h file in.
Is it possible to choose the language at setup, I feel more comfortable with an English IDE.