Have you tried to intialise the instance of your TimeOne?
e.g.
Timer1.initialize(100000); // initialize timer1, and set a 100 milli second period:
Timer1.attachInterrupt(timerInterrupt);
Paul
Have you tried to intialise the instance of your TimeOne?
e.g.
Timer1.initialize(100000); // initialize timer1, and set a 100 milli second period:
Timer1.attachInterrupt(timerInterrupt);
Paul