Try more pulsivator! Use a four chord progression (I suggest using C, G, A minor, F) and stick with the scale.
For example:
Have one pulsivator playing notes [C E G], [B,D,G], [C, E, A], [C, F A] where [_] are in the same column over and over again while the other pulsivator plays notes from the C scale (C D E F G A B)!