My wife's uncle builds these:http://dallas.craigslist.org/ftw/for/5699295489.html
I was very impressed and pleased with mine. We just went to the lease last weekend since last season and the batteries were fully charged with the spinner running twice a day since season. I fully expected them to be dead. Cows nor pigs knocked either of our feeders over. I'm about to buy two more.
He's in White Settlement. If distance is an issue, I can grab a feeder and meet you with it within reason.