||Library for event-driven embedded devices programming (hardware interruputs for all pins).
||Event based system that monitor variables and fire event when the variable change.
||simple button library
||extended arduino map() function
||HG7881 module double H bridge L9110S and L298N drivers library (PID)
||SD card logger, easy to use library for data logging
||this is simple class you can use to manage time
||The SkyMap library allows you to calculate the positions of stars and planets in the sky.