Clockwork A.I.

Could a fully sentient artificial intelligence emerge from a machine that is, either entirely or almost entirely, clockwork? A computer of springs, gears, cogs and pendula?

How big would such a machine have to be in order for that to happen? The size of a solar system, perhaps, or even a galaxy...

And what about sensory perception? A nervous system of, also, clockwork apparatus perhaps. Or to place a secondary "nervous system" inside such mechanics so the A.I. can perceive the harmony of it's own gears' teeth interlocking and the hypnotic cycling of it's own cogs turning and pendula swinging...and thus, draw aesthetic enjoyment from these. This would be such a machine's equivalent to a posthuman perceiving, across the sensory spectrum, it's own nervous impulses and activities that are themselves already perceiving, and to subsequently perceive the impulses, in the same manner, that allow for the perception of the first set of nervous activities, ad infinitum, for a fractalline pattern to be relished in itself...all in real-time.