Otto DIY robot stuff

I have made some usefull parts for the Otto DIY robot.

- The servo shim
I use servos with plastic gears and this shim reduces the gap between the body and legs, which is a weak point (print with 0.1)

- The foot bearing
A bearing insert for the ankle joint of Ottos new leg version (print with 0.1)

- The button mount
Is made for using 7x7 mm buttons (print with 0.1)

- The button cap
Is made for the power button (print with 0.1)

- Otto DIY Humanoid body without arms
I like the design of the humanoid Ottos, but for my daughter I had to build a version that works with 4xAA batteries so i had to remove the arms (print with 0.2, 20%)