Nice idea for the egg turner motor cluckacres.
Just curious, how are you going to provide the dc power?
In ranndom brain fluctuations I've podered the idea of usig r/c airplane servo's to tilt the trays, and a rechargable battery to operate them.
I was also reading through some old chicken books and saw a 'bator that looked like the cardboard separaters for a case of beer(basically a grid of cardboard) that sat on top of a pulley/canvas sheet that rotated slowly, constantly turning the eggs, but the eggs sta in place due to the cardboard.
I've been curious to the extent of the "turninng", is just tipping the egg carton from one side to the other enough, or does the eggs need to be handled a bit and turned or spun in the container?