Magic Smoke Industries presents:
For all your actuation needs!
This mod introduces robotics parts to the game, letting you create moving or spinning contraptions that just aren't possible under stock KSP.
How do I use Infernal Robotics parts?
What does Infernal Robotics let me do?
(robotics parts in this video came from the Model Rework & Expansion)
To get KJR working, you can change
from 1 to 0 in KerbalJointReinforcement/Plugin/PluginData/KerbalJointReinforcement/config.xml
Explanation of all the options in the readme.