double target_position; // End point ( in steps ) for the current move
double current_position; // Current point ( in steps ) for the current move, incremented every time a step is outputed
+ int current_steps;
Block* current_block; // Current block we are stepping, same as Stepper's one
int microseconds_per_step_pulse; // Pulse duration for step pulses
double steps_per_millimeter; // Steps to travel one millimeter