I started this project last year. Put it on the back burner for a while and then got to bainstorming again. I pulled it out from the back of the shop and began tinkering again. I am happy with the finished product. It is pretty cheap to build, most of the materials were just laying around.
I have it set for a 2 second run time which yeilds 3/4 of pound of ricebran. Once the deer find it I can increase the time if need be. It is a 12 volt gear driven system. It holds 100 lbs of rice bran.