What is the intended usage of the two left side (input) pins? Almost all the examples show them being Grounded.
Is the maximum supported length really 8? If so, that's extremely limiting. The shortest commonly-used length is 7, with most recent applications using 9, 15, 23, and even sometimes 31. Is there another model that one can use to do these longer sequences? I really don't want to supply my own pattern file for something that long.