Finally after months of work I finally finished a prototype.
Forgive the rough looks I'm working on a plastic case for it.
It has 27 pads and it will have a 4 pad foot pedal attachment later.
Still having to fiddle with the sensitivity of the pads but they all trigger.
A few are having cross-talk issues but nothing major.
Not quite a Zen drum but more like a trapkat.
Since I'm a finger drummer this works great for me.
Check out the pics.