Looking for fic: robot John maybe?

I've been driving myself batty trying to find a fic I read several years ago that I think was an SGA john/rodney fic but I'm not actually even sure of that much. What I remember is that one of the main characters was a robot in the fic and there was a really evocative telling of his life basically growing up as an AI. It started out with him as just a tiny little simple wheeled bot wandering around in a lab, running into stuff and trying not to fall off things, I think with other sibling bots. Over the course of years, he grew up and learned more and got cooler robot bodies until eventually he got a human form and got to venture out in the world. I don't think that early life portion was the actual bulk of the story and I'm not totally sure I'm correctly remembering which fandom it was since none of the parts I do remember are particularly fandom specific, so I'm having a very frustrating time finding it.

Any help is appreciated, even if it's just "you are nutso and there's no such sga fic!" or "you're not nutso, I remember that fic!"
Thank you!