Flexible fingers hand

grabcad

Basic idea was to use electric motors to control fingers.User can build melody pattern in phone app and send movement patterns files to hand and can play different piano melody patterns . Fingertips should have touch sensorswhich sends signals into rubber wristband where is 5 actuators different sides. User can use wristband around second hand ,leg or upper arm and it gives touching feedback for brain through skin.But this is not just very cheap system thats why is here prototype version only for 4 flexible fingers.I tried to avoid bolts joints because different user needs to have different size hand. Without constant parts it is very easy to scale 3d model any size (for M10 bolt you will need to have smaller scale)Fingers are bent reverse direction for printing, it gives gap between chain elements, and material elasticity works as spring to hold fingers straight.I still do not have the option to printThus, this model needs further testing.