Indexing Mechanism ( Deg.)

Input: large gear (tooth-uncompleted) rotating continuously.
Output: small gear (tooth-uncompleted) that performs interrupted rotation. In 1 input revolution it turns 180 deg. (with the support of the pink lever and violet pin) and dwells (thanks to flat (no teeth) section of the large gear).
The original small gear (tooth-completed) has 10 teeth.
The original large gear (tooth-completed) has 16 teeth.
Increase the large gear diameter for a larger dwell/motion time ratio of the output.