I’ve updated the secTimer library to version 0.4 to fix a bug that left all the interrupts of the microcontrller unusuable (and all the events based on interrupts too, like the serial management) after calling the stopTimer method. The new release introduces support for new MCUs like Atmega32U4 (Arduino Leonardo), Attiny4313 and Atmega344. I’ve optimized the code and fixed a couple of bugs too.
You can downlod the new release at the library page.