The Wobbly Wiggler is a Blender add-on designed to automate the process of adding secondary motion (aks jiggle simulation). This help reduce the time needed to manually animate secondary motion of hair, tails, antennas, etc.
Unlike many other wiggle addons, Wobbly Wiggler can add the jiggle effect directly on top of actively animated bones. The add-on is written in Python, and while not as fast as C++ physics, it can simulate up to 30–40 bones effectively.
Wobbly Wiggler provides tools to enhance realism and usability, including an Interactive mode that allows users to grab and move a character’s arm to test and tweak physics settings (mass, stiffness, or damping), without needing to run the full animation.
Setup is highly streamlined, requiring only three clicks: selecting bones, clicking the [+] button in the Wobbly Wiggler Panel (found in the 3D View’s Tools Tab), and pressing 'Run Spring Physics'.
It supports both bone-to-bone and bone-to-mesh collisions, using the bone envelope as the collision capsule shape, which simplifies the process by removing the need for custom collider helper objects.