meadowphysics is a tangled cascade counter with rapid tactile rule changing.
each row counts down, triggering an event when it hits zero on the left. this can be a drum hit, a parameter change, a synth note, etc.
upon hitting zero each row can be instructed to tell other rows to count down by one. which rows are set by pushing the leftmost column. in this way each row can cross-influence one another in simple or complex ways.
only the top row is triggered internally, as a sort of master clock. in the simplest arrangement, the master clock can simply trigger every row, and you get a relatively normal cascading counter, or polyrhythm generator such a flin.
small grid attached to aleph soundcomputer running a drum synthesis module. large grid attached to computer running monome-sum synth via teletype.