Mechanics, electronics, robotics or what?
I recently have become fascinated with what makes these moving stuffed toys work; like the Elmos and dogs that wag and walk, etc. I have my own stuffed creatures that I make and have an interest in animating them. But I don't know how to look up a book to start to teach myself. Are this toys considered mechanically powered, or electronically or what? Just what kind of motors are in them? Can I buy these motors? Would it be easy to adapt them to whatever types of movement I would want (according to the critter I was putting it in)? I don't think they would be considered robots; they're much too simple for that. Although I might consider doing something like that in the far off future. But I want to do something simple first; so what can someone recommend book-wise for me to teach myself the workings of these toys?