thanks for the cool thread. It really got me going with combinators.
I plan a quite big project related to multiplexing. To keep track of all the parts I would like to add them here. I hope you don`t mind. I used the updated multiplexer from the first post.
The first contraption sums up all the signals in a channel range and outputs them as a stable/clean signal. The channel range (negative) is input in the left two Decider Combinators (slight change in the blueprint compared to the image). The big pole is the connection to the multiplexing network and the small pole the output.