Arduino millis () based intervalTimer library This library defines a C++ class which makes it possible to control the call of code parts within functions or functions at timed intervals.

MilliTimer A software timer class for use in Arduino environments based on the use of the built in millis () function.

The Arduino stores the current millis value in an internal 4-byte register, which is driven by a timer that increments it every millisecond. Once this register reaches 4,294,967,295 in decimal ...

All I can say is that you can try implementing these effects using the delay () function if you wish, but I’m going to base my code on the millis () function. If you are interested in learning more ...