In Linux Fedora 20 Arduino I want to use the Timer library from here, from which I have downloaded the folder
Timer-master.zip, but, when I try to import it, I get the Arduino message that it cannot be imported because its name includes characters other than plain ACSII letters and numbers. I have tried copying the file to
Timermaster.zip and importing that instead, but still got exactly the same failure message.
Please, how do I get out of this impasse?