Dave Ward writes:
In this quick blender video tutorial, I go over a quick easy way of achieving a stop-motion look to a pre-setup animation by adjusting the Frame Rate settings in the Render panel.
To add more levels to this, you could try and adding longer random frames to simulate the error of the human ways. Moving an arm too much in one frame, then not as much the second frame. Have some fun with it! Post any youtube, or examples below in the comments.
In an interesting comment PLyczkowski (maker of the Suzanne Award winning animation 'Lista') writes:
Just lowering the frame rate or flickering the light (not a good idea) is not enough to achieve the stop motion look – you just achieve the low fps look. The key to a stop motion look is a little randomness in the character’s position in each shot. There are two ways in doing this – a clever script, which I don’t know how to make, and would be so happy to have it – or this: In Blender 2.49 leave framerate as is, go to curve editor, and ctrl-rmb click each animation channel every two frames, where there is animation, and when you’re done, change the interpolation to constant. Thanks to the by-hand clicking you get randomness, and only the character gets the low-fps (5 or 6 fps is way too low, in this way we get 12 or 15). This is how I made the stop motion look for “The List”. Cheers.