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[Reply #15 on:]

I really don't know - I simply made it up!
just try different values - theones in the original post were written in binary, mine were written in hex, which is easier for me to read.

[Reply #16 on:]

OK, my guess was correct you don't know how the program works or how to write a program for an arduino. If you know a bit of music, I hope you understand the analogy below:

Each line is like a line of notes now you have four such lines. To play a longer sequence, mimic what is already there, add more lines and experiment with it. The setup and loop are the "piano" that plays the notes so don't pick it apart. You're not a piano repairman. As a composer, you work on the sequence only.