i've bent a coathanger to connect to one of the brackets!
   the way my hand contort, opposing muscle groups contract
   simultaneously, and it leaves them sore. I imagine the muscle groups
   get strong but it doesn't help much unless I can separate their
   behaviors somehow.
   the bracket I connected it to is not on the motor. I can replace using
   the set screw.
   i'm thinking on what fixed object I could mount the motor to. maybe I
   can lash it to a doorknob or something, maybe in a way that prevents it
   from flying around when activated.
   I have some cord outdoors.