This is an arduino (mega) with four ultrasounds to capture 8 drumheads, plus effects on the shared drums based on the distance from the adjoining's ultrasounds..
The Pure Data patch is derived from Virgo, as found here: https://forum.pdpatchrepo.info/topic/13325/just-another-drum-sequencer-sortof-codename-virgo
The info on how to make this work is forthcoming.